All these stars go a long way..but you will need more tacky stuff to put them all up. My son loves them.

not very thick and show the adhesive tape you hang them with....but if you dont mind that they glow well

these are great, you just need to get your own tacky stuff to put them on the ceiling or the wall. They are great and the kids loved them. worth the money.

These stars are pretty weak. They are very large so they are very noticeable during the day and when you turn out the lights they aren't very bright (and that's with a chandelier charge from the middle of the room!). I'd say they glow for all of 15 minutes. :P
I found that the adhesive worked well, but there wasn't enough of it. I ran out and had to use some tacky stuff from my daughter's wall mount Aquadoodle. Both of my kids got the stars in their stockings, but I still haven't put them up in my son's room, because I was disappointed. I'm surprised they have such a decent rating.

At my sister's request, I got this for my 4 year old nephew. He didn't seem to "get it" when he opened the gift, but she tells me that he loves having them all over his room. His slightly older brother got glow in the dark planets, and they've built a solar system in their room (which they use to play star wars). I think it is fun to have them up, but (in terms of opening a gift) I would get a little something else to go with it.