Cup / Bowl of Water
Windows or Glass Sliding Doors
With the foam sheets, cut them into fun shapes
Here the pictures that will explain it better!
With the foam brushes have the child paint the glass, then have the child place the foam shapes on the water - viola they stick! Easy clean up - plus my glass doors got cleaned while they played!
Then they placed the foam shapes in the foam sheet that the shapes came out of. Plus my 6 year old made up a game to play with his 3 year old brother, matching colors, etc.
Plus they are re-usable, let them dry and use again!
Actually I cut some animal foam shapes over a year ago and gave them to my kids to play with in the bath tub where they stuck them to the tile on the wall of the tub.