I've been working on a few mods on my ALICE pack that includes adding a sternum/chest strap, quick release buckles on the straps, paracord, and added a carrier for my sleep system.
I decided to go with a MOLLE magazine pouch to attach my Husqvarna 26" Multipurpose axe to the ALICE pack. The first order of business though was cleaning this pack. It had been in storage for what seems like a very long time and there was quite a bit of rust on the buckles and rings and corrosion on the snaps. The pack itself was just plain old dirty. We washed it off with a scrub brush and Dawn dish detergent and were pleasantly surprised at how clean this one came out.
The mods are a collection of ideas from around the internet as well as just plain ol' imagination.