For low levels, I like the idea of consumables to be the most prevalent magic items. Antibiotics for healing, flaming oils, 5 Hour energy for staying up late, etc. Then as your levels increase, the permanent magic items start showing up. +1 weapons should appear right about the time you start to encounter monsters who resist normal weapons, etc.
I think it was Neverwinter Nights that had a ton of useless permanent magic items that gave small bonuses to feats and stuff like that. Yes, you can sell them I know, but I would much rather find sapphires for that kind of reward, and if I am going to get a skill bonus, I want it to be substantial, even if for only a short period of time.
