Or changing your cooking style from gourmet to freezer bag (saving the weight of food, packaging, and probably one or more pots, bowl, and cup.

Or replacing your 550 fill down (or synthetic) bag with an 800 fill bag. (And the cost differential may not be much?)

Or switching from a two-person tent for solo use to a genuine solo tent.

Or probably half a dozen other things I just can't think of now.