well, looking at your username, i perceive a certain “tendency”, right or wrong on my part about why you are interested in using rice crisp cereal.
buying 2row malt is as cheap as you will get especially in terms of ease of use, potential gravity (and alcohol) per weight and taste. if you look around you should be able to get cheap 2row at $1.00 per lb, and all you need is 9 lbs for 5 gallons of 5% beer. if you dont have any equipment, you could do this with a big enough pot (5 gallons plus), a very large paint strainer bag from home depot (a few bucks) and the grain and an oz or two of hops. mash at ~150F for an hour. remove grain and boil, add hops and youre done. oh and yeast too.