Here’s a neat idea from catmum on Ravelry: insert tiny super magnets in the bodies of Snails before you close them up, and your Snails can crawl up the fridge!
This is what catmum’s snails look like in a more natural setting:
The pattern is free, so give it a try!
Update: catmum kindly reminded me to mention that strong magnets are a no-no for little kids, because if they are ingested they can be fatal. Plus, Snails are a little too small to be toys for under-3-year-olds anyway.