<prompt> Human: Some of my most appreciated items are the ones that were meant to save money in some explicitimplicit way and actually do. Obviously a bit dependent on how much you use them. Some of mine...Citi bike 170 bucksyear vs 30-40 cab rides so far since starting membership Buying a tux 600 bucks vs. renting. So far used 5 times at 100 bucks per rent Wrinkle-free shirts save 3 dollars every week or so without having to put through drycleaning Any other decent ROI purchases out there?  <response>: YNABInstant pot Air fryer Chickens Beef Cattle GardenSewing machineCloth diapers Menstrual cup 