Here is a short list of a few ideas I have had for items and such.
First up: Tattoo of Expertise. This tattoo would grant the wearer a bonus to skills equal to a % of the tattoo level and grant the wearer the skills of the other minions on the team as well. On a 1 minion team it would grant 70% of the tattoo level to the skill trained on the wearer. On a 2 minion team it would grant the wearer a 40% tattoo level increase to the skill trained on wearer and also the skill trained on the second minion at 40% of the tattoo level. Increasing the amount of skill trained on the other minions will not increase the tattoo wearer's amount of levels in that skill. For 3 minions it would grant 30% in each. For 4 minions it would grant 25% in each.
Second item: Bloodthirster [68x1]+0 This weapon would be an axe. It would increase the user's str at some set % of damage delt, likely 20%