My grandchildren, ages 9 1/2 and 3 1/2 both adore these Melissa and Doug puffy sticker sets. The stickers are reusable, and they are easy to pick up and move to another location. Eventually, the sticky will wear off, but for now, they are still sticking fine after a few weeks of use. There are so many imaginative ways to play with these stickers, as far as variety of stickers and scenes. Melissa and Doug have thought of everything here, and I love to look at how my granddaughters have placed the stickers. It's like a little story book created by them and it's different each time. There are animal outfits, leashes, foods, PLENTY of animals, pet carriers, fish, hamsters, mice, and literally every scene you can think of. It's sturdy and great quality and WELL, I JUST CAN'T SAY ENOUGH ABOUT HOW IMPRESSED I AM WITH THIS!!!! I plan to use the Elmers repositionable glue stick to make them sticky again http://www.amazon.com/Elmers-Repositionable-Picture-Poster-E623/dp/B0008IT2KI?ie=UTF8&keywords=elmers%20repositionable%20glue%20stick&qid=1461872236&ref_=sr_1_5&s=arts-crafts&sr=1-5 I use it at my office and it's amazing. If the glue stick doesn't work as well as I'd like, I plan to add magnets. Yes, it's that nice that I want to preserve it. If that doesn't work, I'll be back to buy it again. For the price, you can't beat keeping children entertained for HOURS on end. Finally, peace and quiet and amicable playtime between my grandchildren. Great for road trips too if the child is old enough to keep the stickers together, otherwise, they will be lost all over the place. Some of the stickers are quite small, but most of them are fine for even small hands. I would monitor a child under 4, especially if they put things in their mouths, as I'm sure some of these are small enough to be a choking hazard.