Super compact and lightweight
579987
This kit is far less bulky than several other filtration systems I've tried, and I've had really great results with it - it's simple to use, I've never gotten sick with it, and it's so small and light that it's easy to toss in your pack. After using it for awhile I bought an extra one for our home emergency preparedness kit as well.

The only downside is that I've had a bag spring a pin-sized leak before - we went on a weeklong with a dozen boy scouts and the bag got some rough treatment from that. If you take care of it, it should last for a very long time, but if you plan on sharing it with a bunch of kids, do yourself a favor and buy a spare bag or two (Amazon sells them and they are cheap) to bring along as backup. For that matter, these kits are priced low enough that you'd be better off having one kit for every 3-4 people anyway.

One other tip: if you might be getting water from a slow stream, note that getting the water into the bag through the small opening can take some time, so it can be a little tedious. Consider bringing along an extra wide mouth water bottle (like a Nalgene) that you use to scoop up water quickly and then pour into the bag. It's not required of course, but can really help speed things along, especially if you are trying to filter water for a group of people.
1065178
Great Compact Tripod. One of the biggest plus for me is its lightweightness and the ability to fit it in your backpack!
3880368
Works great, looks great, super compact--I love it!
2691574
Super compact and pops into place very easily. I bought this for myself (5'3", 140lb) because I can never reach things on the top shelves in our kitchen or closet. Its lightweight and easy to move around. My husband has used it several times as well to change out light bulbs, etc. He is 180lb and we have had no issues with stability or quality. Probably great for kids :)
3824402
I love how compact this is. It holds a small multitool, a tube, an inflater, a CO2 cartridge and two tire levers. They pack in tight enough that there is no clanking when packed correctly. I also like that there is no velcro to secure the bag to the saddle rails. The clips allow for a tighter, more secure attachment, again reducing the capability to make noise. I like my bike quiet!
3451717
I wanted a device that I could carry in my laptop bag - this one is very light and I'm impressed at how tightly engineered it is... it's very thin and overall compact for an inverter. Maybe someone would complain that it doesn't feel sturdy - it's so light - but that's a big selling point compared to the brick I had before. The USB port is a great feature, too, allowing me to keep my phone charged when I'm using it in GPS mode. Or I can power my iPod - the FM transmitter performed well when I tried it. Pricewise, it's hard to beat this since it combines an FM transmitter for an MP3 player and power for both an AC device and a USB device - I've seen units that do just one of those for more!
3750766
I'm about 5'10" and have to crouch down to my 550d camera. This is super compact and light, well built and reasonably sturdy (especially with a weight bag). The head is a little bulky to strap to my pack, but it is nice and smooth movement for video. Quick release mount for camera is really nice heavy duty with some metal parts. The shock ring that protects the head from slamming down is really a great addition for piece of mind when you loosen the height adjustment and forget your camera was on top.
1784258
This is the second one we have purchased.  You can't beat its compact size.  Very lightweight and good to take running.
1340443
I bought this because I needed a screen that I could easily travel with (including airplane travel).  This is remarkably light AND COMPACT.  Perfect for air travel.  The screen itself is fabric, and is washable.  Drawbacks are that it's a bit smaller than I would like, and that the fabric screen has a bit of a coarse weave, making the image a bit less perfect than with a pull-down screen.  But overall the tradeoff is well worth it because it's so light and easy to travel with.  It's important to note that you will need your own tripod to go with this.  (It's designed to work with your existing tripod.)  Assembly is quite easy and the product and carrying bag are well made. (For example, the bag is a heavy-duty fabric with really high-quality zippers.  The people who made this clearly cared a lot about quality.
4817659
I purchased the Classic SD Pocket knife because I needed a multitool for an extended backpacking trip. This one is lightweight and contains the perfect set of tools for such a trip - a small knife, a nail file, a pair of scissors, toothpick and tweezers. The unit weighs almost nothing - .3 ounces and has a small metal loop on the top that makes it easy to attach to your keyring.

The tools are small. This is not a knife you want to bring car camping (where you might need to cut tough veggies like carrots) or use for larger cuts. While small, this knife is sharp and I had no issues cutting through a bit of hard cheese. Similar issue for the scissors  - they should not be expected to cut through multiple layers or make long cuts, but are perfect for small snips to those everyday items - food packages, tags off clothing, stray threads, etc.

Although small, the tools are not difficult to extract from the base. They lift even easier than my tools in the Tinker version. To ensure the best life of the tools, make sure you clean it before putting the tools away and check the knife after bringing it to sandy or gritty areas - the small grit can work its way into the base and rub against the tools.
2386303
This is affordable and super compact.  I like the low profile design.  One issue is that it is very easy to lose.
2399610
VERY lightweight, very portable. They're so small I find myself grabbing them all the time and using them for everything. Before, most stands I used were too cumbersome, but this is just perfect. Stands up tall enough for a speedlight or two, throw a soft box on it and you're set!
2622082
It's lightweight,  compact and perfect for traveling. It folds up into a small zippered pouch. It's bright for outdoor hiking, and biking!  I got it to use when I ride my bike to the library.  I'm going on a Cruise soon, and I'm so glad I have it. I will use it everywhere.
738500
Lightweight and compact.  I use them for stabilizing parked utility trailers and they work great for this purpose.  Handy little gizmos.
1508915
Very lightweight and compact. I can put two of these in the saddlebag of my motorcycle without taking up much room. The reflective properties are very good.
2428701
It's compact design lets me carry it in my backpack, all the time.  It's lightweight and performs like a champ.  Couldn't  ask for a better product in this price range.  Thumbs up, all the way.
916008
Super compact and multi-use. I can roll this really small and fit it in my purse easily so I can use it to sit on anywhere from sports games to the picnics at the beach! I don't use the case for it since it doesn't really fit well in it. I bought the smaller hand towel version of this as well but have not used it nearly as much as this larger one.