Why lug around a heavy compressor and hose just to fill tires? All you really need is a battery-powered inflator. There are many versions available, some costing less than $40. My favorite is the more expensive Milwaukee 2475 Compact Inflator, which automatically shuts off when the tire is at the correct pressure.
My Triton SuperJaws XXL Portable Clamping System is by far the most versatile tool in my shop. I use it on every single project. It’s a reliable third hand or a clamp when I’m doing a glue-up. When I need a quick work surface, I clamp a scrap of plywood between the jaws. The system folds up for compact storage, but mine is in use constantly and never gets put away.