You know what would be really handy? A special rune stone that attracts phase spells and distributes them across all phaseable containers.

You put the rune stone in your backpack and then cast phase on the backpack. Any container item inside the backpack automatically phases. Any item that was phased already is ignored. Basically, it is multi-fire phase. It still costs 4 mana per item phased, so you have to be careful.

Magarven the Mad