Equipment system ideas? Use just this. Its normal and simple. :/
Slots.
1. Head
2. Armor
3. Weapon 1
4. Weapon 2
5. Hands/Foot
6. Misc
For what?
1. Head slot is for helmets and so on.
2. Armor slot is for a basic armor. Usually a Chest or Legs.
3. Weapon 1 slot is for weapons. If a Two-handed weapon is equipped, it also fills Weapon 2 slot.
4. Weapon 2 slot is for second weapon, if your hero has an ability to Dual Wield. Or shields.
5. Hands slot is for gloves and everything that is put into a hand and Foot slot - you know.
6. Misc slot is for Pendants, Talismans, Trinkents, Rings and Runes. Almost everything that doesn't belong to the 1, 2, 3, 4 or 5 slot.