
Quick change artists may move the same items in a confined space, but you need to check your box if you use quick-change artists because you may be in for a wacky experience. Many actors have had this experience.
It may be best for you to stick to heavy-lift tools and portable cutting machines such as plyers and tables.
Experiment with new items in the garage to see what you can do with them. You don't want to change one item. Try to change all items.
Try different sized lids for cans or bags and create a variety of boxes. When you are done with the garage, move on to the house and onto the street.
When you have everything you need, go back into the garage and rearrange the items you changed to have a neat display. You will be surprised at the ease with which you can go through the items in your garage and live with the mess.

If you have a hole in the floor, you can use a floor buffer to hold up one end of a large square bar (like 2x4s) for racks and other work. For tools, I like to use a 1" square piece of thick PVC.
Wrap with 3" square V-braces and drill holes for bolts. Rack your pallets on the shelves to keep tools or for easy access to your large workpieces.
A large workbench can be placed on the floor and wedged in there, or you can buy a set of shelves that are raised on steel arms and set them up that way.
Get rid of the excess and see what you have. If you are not using something, keep it off your workbench and put it in a drawer.
Even if you aren't using it, it can be kept until you are ready to use it again. Keep parts you are using in the box, to be used as you need them.
In my workshops, I keep track with four trays that hold some of my work and tools. I use this when we are doing more painting or mixing stains and paints for mixing.
After the paint and stains are mixed, the one tray will go in the rack, and I will be able to grab it apart and go back to the workbench.
If you have a car to go to the store and the trunk is full, you can pack things in there and pull the car to your next destination. If you have a trunk full of stuff, you can remove the seat, lower it, and see what you have underneath.
Remove the tools and stack them on the bench and rearrange the items on the shelf. If you use a rack, you can add your paint cans to the side so you can quickly grab them when you need them.

Have a set of plastic drawers or a shoebox that you can put things in. This can be in your bathroom, and you can take the lid off when you need a section.
Put drawers together with shelves and get your paint, stain, and stain remover. You can take a couple of pallet racks and use them to put them together and store your items.
Use boxes from work and see what you can do with them. Cut off the bottom, cut a hole in the bottom, or even cut a lid and glue it on.
Make a storage box out of a cardboard box and cut some vents in it for ventilation. You can see things you have that you don't need, get rid of some clutter, and put the items in storage.
You can store wood and other materials in plastic and aluminum soda or Gatorade cans. I like to do this in the laundry room on my tarp. You can store lumber in the freezer or the fridge.
Get a bunch of V-braces and make a metal storage box with a hole in the lid to drop a rod through so you can store a drill bit. You can use an old door to store your chain saw.

Have plastic storage bins to store paint cans. Do not put paint in glass or metal cans because they will warp.
I buy bins that are cheaper that are plastic or wood. You can either put the cans in the bins or use plastic totes.
They are less expensive than a paint shelf, and the bins are reusable. I store my pallets on top of them, so I don't have to move them or stack them.
These are just a few ideas, and there are lots of creative things you can do with the tools in your garage and workshop. Get creative and find a way to make a space work for you.