500g high tech fully automated tank. Plumbing so they are always getting a little freshwater each day and no more buckets or hoses. Manuel vacuum if needed. Everything on timers so no need for manual lighting and have automated feeders.
Would probably keep small schools of many different species of Rainbowfish then a bunch of dojo/Kuhli loaches. Stay pretty low tech but still planted. Basically as little maintenance as possible.