I said bidet in another comment, but if you are looking for some other suggestions.

• Bathroom fan timer switches: replace your switch for the fan with a timer. Best way to keep bathrooms less humid without having to remember to turn off. I used this one as it doesnt require a neutral
• French Door Fridge: not really home improvement, but man it makes a difference in qol. I meal prep for the week and can easily access food, store whole trays, and never had to bend over to get items on the bottom shelf.
• Bug screens for door: they have magnetic closing bug screens for doors. If you live in a temperate climate, it can be very nice to keep the doors open without bugs coming in. Also allows pets easy access to backyard without pet door.