1) a traditional lottery site like https://www.powerball.com/games/powerball.
2) a poker site, where players can login, play each other and chat/text to each other, with no AI players.
3) a shared masternode hosting site, 1 button deployment (if possible) with automatic payments of collateral to load up the next MN, reinvest & withdrawal buttons, etc etc

at the moment this is for just one coin (an x11 dash fork), I will be looking to create into more coins, especially the masternode site