how many arrows are we taliking about? @ home I have some of mine in earthen ware vessles, some in headless drums and some in quivers and laying around and set up in the windows and......
got a lot of arrows around. what I don't have is a "rack", but if I was to make one, if by chance I wanted to display my arrows side by side on a wall, I would start out small, but maybe drill some 3/8"-1/2" holes in a 1X2(?) or smaller, cut that length wise spliting the holes, then clean all that up, round the edges and such. These will be the tops of the "racks". get these positioned like a "T" on another piece of similar wood, etc. and glue and screw together. Top of rack is done except to mount on the wall. Bottom of rack could be similar with the "T", but more of a shelf w/ a lip maybe. You'll have to decide how far to space the holes apart. Get the bottom mounted where you want it , lay a couple arrows up there and mount the top. Probably need some hands and a level. The picture in my head looks good.