Paper plate sounds fine to me. If you leave them attached to the umbel in a cool but not damp place, that is probably the best storage situation to keep them until planting time.
I have never tried planting them immediately, so no idea what would happen, but it probably depends very much on your climate. People with severe winters have different concerns than people with wet winters or dry winters for that matter!
It's all bad enough, we don't even know what kind of winter to expect any more!
Here is an interesting trial of planting bulbils early, mid-fall, or late:
http://snakeroot.net/farm/GrowingRou...mBulbils.shtml
Survival was worst for the latest planted ones, but the early planted tended to form tiny divided bulbs instead of rounds. You definitely don't want that, because it will slow down the process of growing up to full size. (clove size is tiny on the little bulbs, vs one large round acts as a single 'clove' and produce a much larger bulb).