This would be actually pretty neat.
Everyone know the Winter Gifts gif you Eggnogs, Snowman Summoners or Candy Canes (Shards)... But wouldn't it be nice if you could make a present yourself? Like: you can put stuff in there and give it to your friends.
Surprise your friend! Drag 100 gold to the present and it's ready to go. Or suprise your friend with an ecto for Newyears Eve?
I like the idea... empty gift box that you can put stuff in.
Granted you will always get somebody trying to scam by trying to sell them and saying there are 100 ecto in there... but I am sure people knows better.