One of the two wouldn't consistently stick to wall, but the one that does is really a neat idea.
925505
This is a great idea, but only one of the 2 hooks I ordered will stay on the wall.  I use the good one for my daughter's shower where she hangs her swimsuits.  The other is on the side of of our dryer and it manages to stay there for a month or two before falling.  When it does fall it will scare you to death as they are quite heavy.  They just don't seem to be consistent.  One stays great on our fabricated shower stall, but the other will not stay more than an hour.
4338420
Sometimes it works and sometimes it doesn't ...
3517131
I had another one of these for several years--and it worked great...however, this one must be defective as it won't stay on the wall.  (There was also a "return slip" included in the box back from January 2014...so someone else had an issue with it.)
685624
My son's report is pretty cool to look at things, but sometimes it just wouldn't work - frustrating. Otherwise would have loved it.
4174060
It's fantastic except that it doesn't stick to the wall too well. I'll have to find something else to hang it up with besides what's sent with it.
4749938
I love the idea of these.  Storage boxes don't need to be super fancy or anything, but if it's a snap that is holding the box together, perhaps it would be good to have the snaps line up? Got two boxes.  One snap on each box didn't work.  Luckily I had some black duct tape so I just taped the box together.  But now what COULD have looked halfway decent when displayed looks pretty cheap.  I still like the boxes, just be aware that there may be some problems when you put them together.
3587441
It was a very nice product but it some parts will fall off of the wall. Otherwise, it looks very nice on a wall and is very fun to look at.
201151
What a great idea! Except that one of the suction cups came off of the unit when removing it from the tile.  The piece is put together from pac plumbing pieces that are glued together, so I can't get it apart to access and hold the screw down that holds the suction cup in place.  Not sure if I can fix it. Kind of upset about this because it worked really well for many situation (shower, window, mirror, certain other walls so that birdy could hang out with us a lot.) Haven't gotten around to asking for a replacement. If I could easily get one, I would move it up to four stars, but its on the bottom of my hassles list right now.
2756171
I ordered two of these - the reason for only 4 stars is that one did not work... however the one that did is very neat - and I would purchase again.
660205
This is a fun whimsical idea, but the adhesive doesn't stick very well. I found that it wouldn't stay put even on paper; eventually coming unstuck.

Also, I don't see any refills available. Perhaps there are, but none mentioned on the product page.
1702212
Very neat and different, having issues with them sticking to the wall without them falling off so have command squares or something on hand. Overall, looks really cool though once you get them to stay on the wall.
2702040
It works ok when the double sided tape will stay stuck to it.
3237856
Sometimes it works other times it does not.
301827
Initially had some issues having one of the suction cups stay on the wall for some reason. Had to move around on several occasions and now it seems to stay up but not aligned with each other but don't want to fix in case the suction cup becomes jenky again. I will try a different brand when I need another.
2735980
one worked and still worked but the other worked for a day or two and stoped.
424906
They have a tendency to sometimes pop out of the wall mount system, but otherwise do a find job of holding tools
2644130
This mural stuck extremely well, better than I thought it would. However, the seams don't line up so every section was a different length. Also, panel 2, which is the one with the two planets on it, was printed incorrectly so the planet lines do not line up. We made it work, you can't tell unless you look extremely closely. It is still a beautiful mural, extremely High Def.