Works well and stays in place.
924429
This clock is just what I was looking for.  I stick it on my mirror so that I always know what time it is when I'm getting ready in the morning.  So far, the clock works well, and it sticks well to the mirror (even after I moved it once).  What more could I ask?
1993256
Allows for great mouse movement and stays in place. I do like the stitching on the sides because it seems after heavy use that it won't separate like some mouse pads do.
1228201
Holds well, and adaptable to a variety of positions.

I worried about it holding well enough on my pebble-textured dash but as long as I mounted it somewhat level, it has stayed in place quite well.  The only time it has dislodged was at the end of an extremely hot summer day where the vehicle was in full sun all day long.  It did not, however, hold well on a 90-degree vertical position on the same pebbly finish (but then, I was just experimenting and didn't really expect it to.)

The two joints allow quite a bit of movement in positioning the phone to your liking.  Fit my Moto X just fine.
1975785
It works and doesn't fall off like the standard Garmin mount does.  Pretty much perfect.  Not much else to say.
2321625
Works well.  Spring adjusts to match mouth of cup. Doesn't slip due to holder.
4386113
Works great even in a semi truck it stays in place.
1040535
If I'm going to go through the fuss of having a bed skirt, I'd like it to stay in place. This item did a great job keeping it right in place!
2420612
Item works well. It stays put when you tighten down. Cradle is adjustable. Would buy another for my wife's car.
2114298
Goes on easily and stays in place nicely.  Really a great tool to help my senior dog into my car.
970426
Stays in place really well. I just wish I could wrap more of my headphone cord around the prongs, but the excess tucks well under the "loop" created by two magnetic pieces.
4891812
Only used it once since we got it on but love it!! Easy to attach and seems to remain in place well.
4115624
I was a bit concerned when I received the seat protector and it did not have any straps or obvious means of keeping it in place.  But I was delighted to find that it stays in place and does its' job well.  I have been appreciative of the job its' done when I clean out my van and find all the debris the protector has collected!
3696020
I have no complaints about this arm band for my iPod.  It fits great and stays in place.  Sometimes I wrap it too tight but after a quick adjustment I am good to go.
437300
Easy to install and keeps my phone in place. Tight enough to prevent wobbling but loose enough to allow for adjustments.
2988793
Stays in place and has enough room for my stuff. Suction cups really don't work like everyone says. Regardless, they help to stabilize the caddy somewhat just by being on there.
1226230
Just had this a few weeks and it's easy to use. I reposition them twice already and yes it still  sticks on that's fine.
1616644
Fits well and otherwise works as advertised. The tie down feature holds the pad in place and makes the ride much more comfortable.