I lived in Yosemite National Park for over eight years. I climbed a lot, backpacked a lot, but I was also able to pursue many projects that I thought up.
One of these ideas was a bear-proof composter for myself and other residents. I didn't have much support from NPS or the concessionaire, the company that runs the lodging and dining in the park, so I had to be creative. I couldn't find mention of a composter like this having been made before, so I didn't have much of a reference. I looked over the web and talked to a bunch of people, but nothing really materialized until I went to the dump one day. A bunch of old bear proof trash can pieces were being thrown away. My solution began to solidify.
The simple, insulated, lightweight coffee mug pictured below is one of my favorite pieces of equipment. I've had the same type for about two decades. It's served me better than any other. It weighs about 4 1/2 oz and keeps my coffee warm without burning my lips just about anywhere. I'll generally store in an outside pocket of my pack, upside down to keep debris out. It's always ready for a break and some Iskate while we're traveling.
It's also very durable and inexpensive. Until the Nomad Ventures website is back up, I'd suggest buying it from Campmor.
The Tardigrade Outdoors blog
Our repository for whatever we are doing.