There are threads here and on the other trad site with a whole bunch of interesting ideas, and lots of ways to make your own as well as buy or design. Personally, I bought 2 long peg racks and stuck them on the wall vertically for my bows. Next time around when I rework it, I may buy some nice wood and make them myself. You can make them cheaply by just getting wood strips from any supply store and a bag of pegs or just use dowels. Paint it up and in a few hours you will have exactly what you want and all done and ready to go. I find that the less obvious the rack is, the more the bows stand out when you look at it so I am not a fan of elaborate racks unless it is for something very special.
Steve