Best way to move items around is to store them temporarily in the shared stash, then create a new character and transfer the items to their inventory until you need them again. Especially handy at the beginning as you'll be spending the first 10,000 gold you do get on buying rings/armour or training the blacksmith.
As for dropping equipment for others to use, a very noble and honour-worthy trait that is.
Long may you vanquish the evils from Tristram!
Somewhat related: You can show others items by shift+clicking them with the chat prompt open. It posts a WoW-style link in chat that others can click to see the item without you having to drop/risk losing it.
I found a black mushroom and that was bound to account. Other than that I don't know of any items that are like that, and Blizzard specifically said that they will not use any such system for equipment.
So we might say it's out for now. I wouldn't be surprised if Blizzard decided at some point that they need binding to remove high end items from the economy. I know they've said they won't, but that doesn't hold a whole lot of water with me anymore.
Honestly, with the current crafting costs I think the economy will be fine for a while. Still, inflation will happen sooner or later with the current system anyway, and the binding system would prevent that. At least I think it would. I wasn't against the binding system when it was announced for this reason and still wouldn't mind it on high-end items if it turns out that its still needed.