There are some people way more into brewing hardware than I am. Those are pictures of a SIMM, Steam Injection Mash Mixer. SIMMs are complex variation on what I'm going to build soon, a SIMU, Steam Injection Mash Unit.

The wallpaper steamer idea is a good one, but I'll be using a modified pressure cooker that has a valve to control steam release. Don't worry, when I start building this mofo, you will see pictures and stuff.