Rose Whittaker at over at R-N-W.net has created these cool printable equipment packs that you can print, color and fold and cutout to create boxes for inventory cards.
These make a great physical prop that players can store their item cards in.
Print them on light cardstock in black and white, then color them with pencil crayons, markers or alcohol-based art markers (e.g. Copic).
They look great and physical inventory cards are more fun then writing on character sheets.