Well. 16x18 is not real big. Right now I'm looking at my workbench under the window, the divider wall between the shop and garden area is storage cabinet, old dresser with tools and stuff, probably some more pegboard and shelves. The back wall (18ft) will have all my bigger stuff parked....table saw, miter saw, band saw, etc. They're on wheels so I can roll 'em out if they need more room for working. South wall will be half for wood storage and half for my artwork supplies.
Anyways, that's what I'm thinking right now.