I have a std 2 car garage for my do-all workshop (automotive, woodworking, machining, welding etc) so the space is at a premium. One side is dedicated to the automotive work (with a floor lift installed), the other side is machining. I don't have to move heavy things much but the engine hoist with the load leveler is the main tool I use for scooting things around the garage. I have a hand trucks, come along, floor jacks, transmission jacks, winch on the truck etc but the engine hoist is all I've used for this, it's a great multipurpose tool. However, it's a bit of a pain to maneuver in a small/packed space. So I've been thinking about picking up the 1000lbs hydraulic cart from Harbor freight for getting things off the back of the pickup truck or from the workbench and moving them elsewhere.
If I had a bigger shop I'd add a pallet jack and that should take care of just about anything. Tom Lipton (oxotool) recently did a video on how to move heavy lathes etc around the shop, it's a good watch for sure.
Forklifts, tractors, stair climbing electric furniture dolly etc...those would be cool but not for my small home garage.