Here’s the template I made for the Magic Item Cards I’ll soon be introducing to my players. They are divided by armor, weapons, potions, rings, scrolls, staffs, rods and wands, spellbooks, and wondrous items.
The card gives you plenty of space for appropriate artwork and pertinent statistics. The back of the card can be used for additional information.
The idea is that the players are responsible for the cards and must bring them to the table if they plan on using them. Obviously, for the consumables, when used the cards are returned to the DM.
I think this will potentially aid the players in keeping track of their items, keeping things from getting lost on a character sheet, and will help me keep a closer eye on them.