Cafe 90s: It speaks for itself, a cafe with 90's themed stuff. Poking more towards the millennials that love the decade. With grown up twists on kid favorites. The decorations would be a bunch of 90s stuff on the walls with 90's music playing with old ads, music videos, shows, and movies on movie night playing on TVs.
Tabletop Pub: I love table top gaming, I love food, and I like booze. So why not combine them into something that anyone can go into, but have a space for tabletop gamers to play D&D, Warhammer, ect, ect. It'll look like a regular pub/tavern and run like one. The difference being room in the back for tabletop players to play without being bothered and be able to order food and drinks.
Final one is a food truck. Haven't thought this one through as much, but it would be fun to travel around and serve food in new places. Might even hit up conventions.