I keep Wallet-Sized Diamond Sharpening Stones in my fanny pack when I hike or camp.




I also have a fine and extra fine sheets of "peal and stick" honing paper cut to fit inside my OSK Altoids tin. I placed them flat in the bottom face-to-face. If I need them in an emergency, I can adhere them to the top and bottom of the tin and have an emergency sharpening stone. BTW, I lifted this idea from Chris. Thanks!

Fine Sharpening System
"The Fine Sharpening System consists of the glass plate; honing guide; 25 soft plastic feet; and two each of 800, 1200, 1500, and 2000 grit, 41/2'' x 11'' Klingspor finest paper with ''peel and stick'' application."


They also offer a 4-Piece Diamond Hone Set
"This set is great for quick honing of router bits, chisels and knives — it lets you sharpen any tool quickly! Diamond hones on plastic handles are packed with coarse (Green 200 grit), medium (Yellow 400 grit), fine (Red 600 grit) and super fine (Blue 1200 grit)."


Or perhaps something even smaller, Diamond Mini-Sharp Stones
"Attaches to your key ring for '' anytime, anywhere'' sharpening of knives, router bits, and other tools. Handle folds to protect stone. Available in three different grits."