The plan, as it is in my head, is for two of the kids bikes to be parked near the garage door so the little darlings can get them out without running the gauntlet of chemical burns and power tools I forgot to unplug. Already in the rafters are the tag-along and the as new bike SWMBO has had for 5 years. We shall not worry about these two.
I don’t have a lot of floor space but there are a few areas above the workbench and in one of the corners that the others could hang, if suspended vertically wheels against the wall, and allow me to get into the garage.
The hooks Seanodav linked too might have potential. need to go and look at the where they could be screwed into.