(GAY GUYS) best positions and any general advice?

so my boyfriend and i have already had sex twice (we've both been in both positions) and it was just doggy and missionary. is there anything you guys recommend? i wanna try anything that'd be really fun for both of us, whether we top or bottom. any other advice is great. :)

also, when it comes to bottoming, any like...cleanliness tips? i just always wanna make sure i'm super prepared.