Interesting graphic choice.
These are Pixel Panties, lady's underwear that look 8-bit. They're currently an Indigogo project but already funded so you can get a pair starting at $25. They'll go perfect with a Minecraft creeper mask. Trust me, your boyfriend will love it.
Keep going for a shot of all the colors and a video.
Thanks to Paralyzed Player, who reminds us all there's no excuse not to play.