Foam stickers come in different colors, shapes, and sizes! I bought DearDaughter1 the Hearts and Flowers set, but there are a variety of themes to choose from. They also come in a variety of packaging sizes and I purchased the one in a Chinese restaurant doggy bag like container. It was half off at Michael's.
These stickers can easily be peeled by a little 22 month old and they are so pretty that they can be used to decorate anything!!!
Here is an example of a gift bag DearDaughter1 decorated. I purchased the gift bag, also at Michael's, and sat DearDaughter1 at the table with the gift bag in front of her and a handful of stickers. This activity kept her occupied for about 15 to 20 minutes and she made something that will be useful!!!