I would speak into existence a bag in which I can will anything to go inside and the bag would never grow in size or add-on weight. Anything can go in at my will.
It would help. I would be able to carry as much as I want and feel no weight or have any space restrictions. Plus, if someone gets out of hand - I can will them in the bag too.
(lol this is not my idea ... the "bag" idea comes from a Romanian children's tale called "Ivan Turbinca" - I do love it though)
Fun question - cheers!