I had hoped to source a bell that I could cut the ribbon on and say it must have fallen off the sleigh (AKA Polar Express) but not found anything suitable.
My kids wanted one for the Christmas tree after seeing that movie and Spotlight had some really nice choices - all on ribbons. They were just tied on bows which came untied really easily (so you wouldn't even have to cut them ) and 2 large bells cost about $1.50 because they had their decorations 50% off. I don't know if you can get to Spotlight at this point, but thought I would put it here in case it was helpful