^^^ Just to expand on what HC suggested...get 2 lengths of 75 (or 90) x 45 pine mounted vertically from floor to ceiling or what ever height, buy a 35mm spade-bit & a few lengths of 35mm dowell, set up a jig to make sure all dowells are the same angle (apx 5deg off square if you want boards to lean back a bit) & drill at about 150mm centres for adjustment, cut dowell to suit (just under) board width, bolt/screw the 2 lengths of pine to wall & set dowells to suit - voila!
PS something like this - image off interweb.
