T-Stands for Everything
T-stands have any number of uses in a shop. Use them on your workbench, on sawhorses, even on the floor. Set projects on them for painting and staining, use them as drying racks when you're finishing trim boards, rest cabinets on them when you're clamping on a face frame, and lay planks on them for gluing and clamping. They stack together neatly and don't take up a lot of precious shop space.
Bucket-Lid Blade Holder
Tired of extra saw blades banging around in the drawer or kicking around the shop? Attach them to a 5-gallon bucket lid with a bolt and a thumbscrew. They'll stay put, and the lid will protect your hands when you're digging around for other stuff.
Save Your Containers
Save all your glass and plastic containers for your shop. Glass jars work well for liquids. Clean brushes in an old tin can. Brush on glue from small containers of all kinds. Sour cream/cottage cheese containers work for just about everything. Clear plastic containers are great for miscellaneous storage because you can see what's in them. Just label everything with a permanent marker.