two things...
1) I got a retractable one that hangs from teh ceiling in the garage, and plugs into the outlet above with the garage door openers. I find myself using this more than anything else. Its no good for welding or super heavy stuff, but for 99% of what I need a cord for, it works great. Its GREATLY cut down on my extension cord mess, cause I hardly ever have to get the other cords out anymore, which means I can hardly ever get lazy and LEAVE them out
2) the others are just coiled, have a velcro strap around em, and I Hang them on the last 1' of garage door track that the garage door never uses. They're off the wall (leaving wall space for other ****) and on the side where I hardly ever am. works like a charm!