Having a drop-down box would be OK, but I see one glaring issue with that:
Send to Chest
Send to Chest
Send to Barrel
Send to Barrel
Which chest? Which barrel? If you have multiple containers open at once--with the same name--it makes it impossible to know which container you are intending as the recipient of the selected items.
However, I do have a possible solution (and one I think other users might like as well). What if we could rename containers? Instead of just "Backpack", we could rename it to "Crafting Supplies" or "Arrows". Then, if you have multiple open, it becomes easy to figure out the correct one.
Here's another option--still using the renaming of containers--that may work without having the drop-down menus.
1. Open inventory.
2. Open containers (let's say 3 backpacks renamed "Scrolls", "Arrows", and "Stuff to Sell").
3. CTRL + Click on the items to select multiple in the inventory. Let's say scrolls go first.
4. Right click and choose the container name from the menu. See example menu below.
Use (grayed out--you can't use multiple items at once)
--------------
Send to Roderick
Send to Jahan
Send to Madora
Send to Homestead
--------------
Send to Scrolls
Send to Arrows
Send to Stuff to Sell
--------------
Drop Item
Destroy Item
Now, you can build the menu based on the open containers and current party members (and, if you've found the Homestead yet).
Of course, a few things would have to happen at this point:
1. Check if like items--that can stack--already exist. If so, stack them.
2. Check the remaining available space. If enough spaces exist, put all the remaining items in the container.
3. If not enough space exists at this point, notify the user "Cannot move remaining items into container".
I'm sure a few other checks would need to be made
Tenebrium, for example, would need to check if you have the skill or not and would apply rot if you don't. Another is a strength check to see if one person is shoving items in another character's container (within the other character's inventory).
.
It's a bit complicated, I know. I'm a programmer, though, so I understand that it may not be completely feasible depending on what's in place right now.
They (renaming containers / quick moving items) would be a great addition to inventory management.

And, as just a last thought, what about a sort option (like for the character's inventory) for containers as well? Maybe I just hoard too much... I need help.
