Since you want to decrease your screen time, buy something that is not at all associated with screen time. As has already been mentioned, a book, a cookbook, kitchen utensils, paint and brushes–all good ideas.
I recently gifted myself a set of colorful Cuisinart knives. Knives are extremely important in the kitchen, so it is a useful gift but also pleasant to look at because I very much like colorful kitchen items.
If you peel your own vegetables, I can recommend my Swiss swivel vegetable peeler. It works great and is also pleasant to look at, being a primary color.