Good for dark surfaces but not very precise
932233
The markers are not as precise as I expected them to be. Even if you shake them for several minutes and prime them as instructed, they will still leave the occasional blotch when they let too much oil through. Also, the red is not actually red, but a dark pink tone, even when dry. Other than that, once dry they seem to hold well enough and you can use them even on black surfaces. I bought them to repaint the debossed letters in my old car's switches, which were faded or yellowish after so many years and these did the trick. However, since they are not very precise, I had to clean up a lot of paint after each application. A rag with just a few drops of WD-40 works.
3236678
Not terribly bright, but fine for a very subtle lighting effect.  Also, the line to the solar plate is rather short.  We hung ours along the rear porch and had to run lights down the house wall to get the solar panel affixed.
3904392
Product works well after shining a 500 lumen flashlight directly on it.  However, if you paint your white house numbers with it, don't count on any glowing after nightfall, even if those numbers get direct afternoon sunlight. At least, that was my experience.
308923
This is great for black or white products but in between you have to be careful, most of the time it won't match that well.  This isn't a problem if you have a small area but you you have several areas or a larger area it can be a bit annoying- and look worse.  It comes in different colors and you mix them which can be messy.  It did make the area look smoother and prevent more fraying but is more or a temporary fix.  Not a bad product but from the reviews I guess I had higher expectations.
4842057
Easy to apply and seems fairly durable.  Offers more privacy than other screens I've used but not much compared to Supershieldz screens that I've used on other phones.  My biggest issue with this is the impact to resolution.  It's VERY dark!  I was using with the Nexus 6P adaptive brightness but that does not make the phone nearly bright enough to enjoy using the phone.  Started using Lux Dash to better control screen brightness but the increased brightness resulted in additional battery drain.  I also found this to be almost impossible to use in direct sunlight.  Also, as is with most of the tempered glass screens, this works better with some cases than others.
3792739
Worked fine for cat spray but the room has to be really dark.  Originally I thought the light was way too dim but then found that the battery end cap was not making good contact at the threads. Cleaning them and re-tightening the cap  improved the output.
958879
Installed it in the shaded corner of my yard because solar light is out of the question. Not as sensitive as I expected it to be. There are some occasions where I walk a few feet in front of it back and forth and it does not trigger until I actually wave at it.

Gives decent light, not amazingly bright. Seems well built. Time will tell.
Serves my purpose so the light stays. Those who are thinking of using this for security reasons may need to consider other alternatives.
2848475
These work well and the really nice feature is that it off when the light it on. My problems with it were that it was very bright, and not a good light to see in the middle of the night. Also, I'd like the sensor to be more sensitive to light, so that during the day when there's some light in the room but it's not full light, it would go off.
1809625
good construction.  led pinpoint can be difficult to see in daylight at max distance
2830451
This is a good tool but you need to have lots of light to see the markings.  It is great for cocktail making but you should also have a standard jigger on hand for simpler measuring.
3554963
Works on most products, not best on glass or smooth surfaces.
1784656
A good quality product but not as powerful as I would like it to be. It was intended to illuminate various displays (rather small-size show cases) but lighting (even though adjustable to two levels) not adequately strong, even at the top level. It is a quite inconspicuous spotlight though, with a good quality finish. It would be perfect for my needs if it was a bit more powerful.
3309499
Works okay but tracking on some surfaces not too good. Seems to be low resolution where it does not track your hand movement accurately.
4914207
Not as bright as I had hoped.  The motion sensor is a bit wonky, too.  But, it does work.  Not enough to light a whole closet, but totally reasonable for smaller spaces.
4248716
I was looking for a portable lamp for my husband to use on the table while doing jigsaw puzzles and thought something that approximated daylight conditions would be what was needed.  I think for many other tasks, like sewing, paperwork or reading, this lamp would be ideal, but the light reflects off the glossy surface of the puzzle pieces, making it hard to see them.
524523
I put this up at the garage. It stays on dim untilit senses motion. It the gets brighter and stay bright while motion is sensed the goes backto dim. A good way to light up a dark area without running wire. I recommend this. It comes with a pin to turn off and on. The in is about the size of a paper clip. easy to use and good light.
3212012
I wanted something inexpensive that could be used to view photo negatives prior to scanning them.  This does a pretty good job but you need to place a blank piece of paper over the lighted pad in order to smooth out the light from the pad.  Overall I am satisfied.