You're probably referring to wands?
Yes there is a great way to do that, some people even consider it a cheat...I say: go and grab it!!
do this:
stock up on potions of Master Thievery. Make your thief drink all of them (pick pocket ability should be around 280-ish). Then sell your wand to a shop and steal it back. It will now have 50 or 100 charges, depending on the type. Of course, if you're rich you can also sell and buy them back again
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Melusine
Your voice is ambrosia