I've switched to making our glasses cases and wallets and ditty bags out of bright orange or white SilNylon to make them harder to lose.



I stitched a loop of cord into the interior of our ULA hip-belt pockets, and wallets (only needed for non-wilderness town-to-town hiking), sunglasses, and reading glasses are clipped into those pockets.



And I tied a string to an anchor at the edge of the side pocket on the pack, so I can clip the ditty bag to the pack. Snacks, sunscreen, mittens, windshirt, etc are in the bag and tied to the pack, so they won't fall out of the pocket. I can pull the bag out of the pocket and root around in it without unclipping it, so I won't screw up and leave it on a rock somewhere.




It's a little hard to see in the photo, but there's a short piece of thin spectra cord that ties that S-Biner clip to the gold cord (which is itself tied to the pack). This makes it so I can't lose the S-Biner clip.

I've used something similar on my (ancient) GoLite day pack for years. Just a silnylon stuff sack with the draw string looped over an outside strap, where the draw string is long enough to put the sack in the pack while hiking.

My wallet, phone, keys, and SAK go in here. They don't get lost, and I can pull them out quickly.