My tank is in the basement where no one goes to unless we are going to the backyard. I try to take a few minutes a day to just enjoy a somewhat stable tank and make sure the inhabitants are happy. Before that I would try to add stuff to the fish room (its an in wall tank) that would require attention, like a fowlr set up but once the projects are completed you still have to go out of your way to see the tank without the extra incentives.
But one project that would be fun is a breeding tank with clowns or cardinals, maybe it could be doubled as a frag tank.