A turtle can occupy a bed with the help of kinetic augument.
The day does not pass, but no-one can use the bed as it is "occupied"

Amazing.

I think it'd be fun to leave this as long as the bed is no longer considered occupied when the turtle moves away.

Will be fixed when I finish switching the mods to use the new Fabric fake player API (see FabricMC/fabric#3005 (comment))