After seeing the /gift command in action I thought why not make this some sort of permanent system like /mail is.
I'm not entirely sure how this would work but sending items (like parcels) with some sort of 'PO Box' system, where players could simply type in a command, a players name and a box would appear and they could drop in the items to be sent. The receiver of the gift would get a mail message to notify a 'parcel' had arrived for them.
This, I believe would be a cool system if you need to give items to a player who is offline or unable to get to you at that time. This could also help towards the economy buy charging players for using the system (like shipping costs).
I am not sure if I am the only one who would like to see this or if it is entirely possible to do, that's why I'd like to hear the community's opinion on this.