Boat fender floating keyring

Hollow fender that will float with one ordinary key attached. May need to be scaled up to hold multiple keys.

Print upright if you want to use multiple colours and use a generous amount of supports and a nice base like in the photo or else it may not adhese properly. 

It may be possible to print this out of flex & scale up to the size of a proper fender & use on an actual boat but have not tried this.