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?
Robot vacuum. Honestly made a huge difference. I’m able to keep my flat clean now, I mean I still have junk on almost every surface but my floor is so so clean.
Weirdly he (yes, I’ve anthropomorphised him) helps with the whole body doubling thing. I tidy up, clear the floor, and set him off while I go do the dishes and clean the kitchen!
I upgraded to the roborock S7 MaxV. My previous one just vacuumed. The new one mops, as well as changing its own water, and emptying its dustbin. It was expensive, but a good investment.
Might I advice adding some large googly eyes. It makes it far more hilarious to watch wander around. 👀
I saw one recently someone dressed up like a ghost for Halloween
Googly eyes! Great idea!