The wheel is definitely your friend if you're a crafter, and an uncarpeted floor helps, too. Rolling carts and chairs on casters make moving your projects from one workstation to another much easier. If you've ever employed a wheelbarrow in the garden, you've experienced firsthand how much more convenient it is to transport the things you need in aggregate. If you have to move from your computer to your sewing machine, or from your template maker to your paper kiosk, do it without having to stand, stoop or schlep supplies more than you have to. A good layout helps, sliding shelves are a great convenience, lots of drawers are always an aid, but if you've got wheels on your chair and a few portable trollies, you're golden.