"Traditional" rucksack/backpack?

[Angstrom]

I recently started hiking in a kilt and have found it to be very comfortable. I'm not planning on full Highland attire, but thought it might be nice to have a small backpack/rucksack that didn't look like something from the 21st century. Any ideas?

I've worked with the local wilderness search & rescue group, and so it feels wrong to go for even a short day hike without some basic gear.