I've used epoxy in the garage plenty of times but it's something I'd consider too messy to make a repair with in the field. Same with the drill bit...to much fuss. If I need to make a hole I use the awl on my SAK...it's a bit brutal but it gets the job done.

The jig saw blade is very similar to a hacksaw blade only smaller and to be honest I've never needed it but I don't have a metal saw on any of my multi tools so it's just some extra insurance.

If I need to sew something heavy I use the large needle and feed it using the pliers on my multi tool or SAK. The thread is from the Coghlans tent repair kit. I also keep a small bobbin of black thread in my pocket kit (from the original AMK gear repair kit). For when I need more strength I use fishing line (From where? That's right from the fishing kit...I'll post that one as soon as my order comes in from Best Glide Aviation).

The theory behind the kit is similar to a first aid kit. Keep the gear alive until you can get it home and fix it properly or replace it. This keeps me from going overboard...something I'm prone to doing with such things.