I spray down my tanks and drysuit with a garden hose.
My wing gets disconnected from the backplate and rinsed internally via an adapter that connects that garden hose to the BC inflator mechanism.
The rest of my gear gets put in a large tub (or two if I've been diving with my camera rig) filled with that same hose, mixed with a pot of boiling water and some Slosh wetsuit cleaner. My base layer, socks, and dry glove liners go in the tub with the rest of my gear. Regs too, which is safe because I've got DIN first stages with dust caps that properly seal against the regulator O-rings.
After spending some time twiddling knobs and buttons to try to let fresh water in, I let the gear soak for a while before drying it on a collapsible clothes drying rack with a few dedicated hangers.
My main drysuit undergarment only gets washed when it starts to smell a little funky, at which time it gets tossed in the washing machine and hung to dry.