I keep a $20, and $5 bill in mine in the plastic bag with the Tilley sheets and a tiny wood block with firesteel. This along with the spare lace and foam piece are all that I keep in my hat. The firesteel on wood I took off another hat that used it as a chin strap slider. It could be laced on the Tilley too, but I have found it easier to just keep it in the plastic bag inside the crown. I have both a T3 and T4...The T4 is a great hat. I also have a 4 lace band I braided on mine.