I like the simple things. Particularly edging and denial. Could do it for hours on end to a partner. So long as they're restrained. God knows there's nothing more torturous than being unable to orgasm
if you have a cell phone there are several apps that can make for a fun spontaneous night. They randomly generate BDSM activities for each person (Dom/me &sub), that you get to prechoose before you "play" ..that way your not doing anything you haven't agreed/consented too. A few also allow you pick toys you own as well. Some will even have a time limit. The phone then randomly picks for you based on your settings. Make sure you allow a partner to also know what your picking as they might not want to carry them out. Like all things BDSM you need to still communicate (I think there are also online generators still around and few made like board games that play online)
You could also try sex dice. Most stores sell them, you roll for position, punishment and toys.
Role plays another good one if your really new and exploring just how BDSM fits for you and your partner. With Role play you can adopt/put on a persona for the night and situation/setting. If it doesn't fit, you never do it again. Its a good way to "try on" new styles. Costuming can often provide confidence for partners too. While roleplaying isn't for everyone..it might work for some, if you feel you need to step outside yourself!