Oh, this is a life saving idea! Sippy cups won't hit the floor. A strap attached with a suction cup under the table. I wish I had thought of this when my son was in a high chair. He was a Sippy Cup Tossing Olympic hopeful.
It'd be great idea for any door! Door Jammer - allows you to open and close babys door without making a sound. Keeps little ones from shutting themselves in the room. (This would be a great gift for new moms.) Add to scrap fabric ideas!