Update time!
I'm going on a weekend hike with my Scouts in a few weeks so and am trying to squeeze some dirt time in over the next little while. Spring weather has started to tease us, so my kit is in transition along with Mother Nature.
I've changed packs for this kit, moving it from a day hike sized backpack to my 60 litre Jack Wolfskin pack. It's a bigger and heavier pack, but gives me room to add my jacket, another water bottle, a cook pot or kettle, and a MH meal. (Spring's warm weather means the jacket will be off more, but still needed when the temp drops again.) It's also got lots of room to add more food or strap on a more robust shelter and bedding system when our next overnighter rolls around.
Our DIY experimenting also continues. My son and I made pot cozies out of an old hot/cold food bag. I now have one for a MH meal and also my canteen cup, that I can add to this kit if I plan on cooking while we're out. We also made a windscreen for our stoves out of a dollar store aluminum oven liner. These take up very little room in the pack, add very little weight and cost a total of $2 plus a little duct tape.