I love coat hooks. For the past several years I've been collecting hooks of all types, especially the simple bent wire variety.
This is a selection taken from current eBay auctions - just search "antique wire coat hook." I love looking at all the different ways the same problem was solved.
Prices on eBay are high; I recommend going to the local salvage yard and snooping around. I've even talked junk shop proprietors into letting me remove the hooks from old coat stands and wardrobes.
Be careful when mounting coat hooks. Most of them were intended to screw directly into wood, so the screw threads are small. Unfortunately, most of our houses are lined in drywall, which is little better than dense sand. If you can't screw the hook into wood, make sure to use an appropriate drywall anchor.
For more on archival housekeeping, please see our previous post on Mendelson's amazing tome.