Here are some literal Door Bells!
These are a type of dangler that takes 'door bell' literally by allowing you to have a tiny bell for your door. Each one has a 'chibi style' little-big-heads 3D figure of a character, and the same small silver metal bell. The bell hangs from the characters' feet, and the clapper has a full color 2 sided flat paper tag/card with a different pircture on each side. The character & bell are suspended on a thin, flexible metal wire that's attached to a suction cup.
When stuck to (something?) the door is supposed to strike the bell/character and ring it. However, suction cups don't stick to wood, nor ordinary plaster/wallpaper walls...so how do these really work? Suction cups like this generally only work well on glass, tile or flat plastic...especially with movement & a suspended weight.
The Sonic one is different from the others because his bell is next to him, rather than at the feet. Did it break off? Tails is looking a little poorly with very tall eyes that are also a little bit cross-eyed. Amy's paint isn't the best, but the did get all of her detail including the shoe laces. This funny mini style where they don't really have legs wasn't used at all in later items and isn't super common on vintage things like this. This is a cute selection of little bells. (But, was there an Eggman one?)