My daughter just started playing DDO, and has an Arcane Archer. I farmed up the Silver Longbow for her, and assume a ML8 d3 elemental damage ruby of some sort would be good to stick in the slot. I had also thought of a ruby with acid spellpower, but that might be better found on an item of some sort. (She hopes to upgrade her Veteran 3 starter gear, and is watching for that.)
A variety of ML8 d3 rubies would be cool. I have rubies of other MLs to trade.