If losing receipts is costing you $$$, then I'd be printing every one out, filing 'em in paper envelopes by date (one or more envelopes per week), and keeping a

If losing receipts is costing you $$$, then I'd be printing every one out, filing 'em in paper envelopes by date (one or more envelopes per week), and keeping a written summary (alphabetical by vendor?) in a spiral-bound paper notebook. Yeah, that's a paper-based hassle. But with how human brains work, the physical ritual of doing stuff with paper is often a "stickier", and easier-to-recall-later, habit.