My recommendation is a small thing: a trashcan with a swinging lid!

Covers the trash, reduces smells, will prevent trash tetris (sometimes), and very good instead of foot-pedal opening trash cans or trash cans put in a cupboard.

Another thing are toothbrush holders that stick to mirrors. Might jog that memory of needing to brush your teeth!

Wall-mounted keyholder by your door, too. Anything I put on a flat surface will eventually be lost or covered with more junk & papers. My keys are WALL-ONLY!!!

What item(s) have helped you with your struggles?