Do you remember Colorforms? We had a Sesame Street set we would lug around with us everywhere. We loved the smell of the Colorform shapes, the simplicity of the entire thing and how we would always be entertained with them no matter how often we played.
We recently discovered Mudpuppy's Sticker Set Play Scenes at a local shop and thought that not only did they evoke all of the great fun of Colorforms, but they were great for car trips and restaurants as they are totally portable.
Our son has the pirate mini-play scene and loves carrying it everywhere. The reusable vinyl stickers and be arranged over and over again.
The original sticker scenes, $11, comes with a 9" x 12" board and the mini play scenes, $8, are 7 3/4" x 8".