Bags of holding can be charged, increasing their weight savings.

Bones are only loaded when the experience level (or highest experience level reached) of the dead player is less than or equal to the current player’s experience level.

On April 15 (tax filing day in the United States), you are charged a sales tax in shops.

Charging a wand of wishing adds 1-3 charges (if uncursed) or 3 charges (if blessed) regardless of how many charges are in it. This means you could turn a 0:3 wand into a 1:6 wand, but since the only-charge-once restriction still applies, this doesn’t grant you more wishes or anything.