you have to kiln, or it'll taste like chicken scratch....and most feed stores would probably special order whole barley for you....
edit: for a 5 gallon batch you're looking at like 12 pounds of malt, not sure if a BBQ rotiser would do it...plus you need to dry it at room temp, so the enzymes stay intact for mashing....once the kernels are firm and crunshy you can put it in the oven... i use
@Schlenkerla patent pending wire baskets, if the barley sprouts are at least crunchy to the squeeze, they can kiln in a 170f oven for 12 hours...it'll be a dark beer, but convert fine.....
edit #2: you can make a dry hopped rice beer with a 20lb bag of rice too, just dry hop it....10 gallons for the price of a bag of rice...pretty good.....i can get a 20lb bag of rice for ~$8 here, with the alpha, and gluco-amylase, comes out to about 7.5% ABV, for a 10 gal batch..but that takes a lot of rice hulls, if you can find a bale at a garden store..wouldn't recommend it from a homebrew shop....
further note: if you got $600, you could make booze for $1.25 a 1.75l, but it's just not the same as naturally fermented.....