I haven't done a mini mash but if I did I would just do a small version of what I do in my regular mash. 1.5 quarts per pound at about 154-158 for about 60 minutes. If I was only doing a couple pounds I would get one of those 1 gallon thermos coolers that have the flip up spout on top. Heat my measured water, pour it in, stir in milled grain, wad up a fine mesh bag and stuff it in on top to act as a filter, put the lid on and set a timer. Drain it when the timer goes off. For space reasons I would steep the steeping grain separate.