Setting up a 5 gal

Hey everyone. I've been away from salt water for about a year. I had a 20 gallon running that I tore down. Now I just want to set up a pico buy my computer. I'm thinking a 5 gallon tank. I am think mostly ZOA's with a hammer maybe a toadstool. Just a shrimp for live stock. I'm wondering what kind of equipment I'll need. My plan is to do small water changes daily. I'm thanks for your help