What should I do for 100 subscribers?

I just recently reached my goal on youtube, 100 subscribers! I have NO idea what to do though. I can't do giveaways. My channel features some random games, mainly ROBLOX, Sims, and Minecraft. My channel is > http://youtube.com/...Mi8blysrGA
No need to subscribe, if you don't want to then don't. I just need ideas ^.^