In the mid '70s, the family got into the backpacking craze. I say family, but it was really my parents. The rest of us were happy with car camping. Car camping allowed us to bring more stuff, especially extras like treats for 3 growing boys. Backpacking on the other hand means you have to carry everything. A Snickers bar takes up space and will also melt at a fairly low temp. Solution? Replace candy bars with Space Food sticks. Being snotty little kids we bitched about it, but we never refused a stick.
Sodas are heavy and take up space. Solution? She found some little tablets that were like a flavored Alka Seltzer. Drop them in water, they dissolve, releasing CO2 and the flavoring. For approximately 3.5 minutes you had a mildly carbonated drink. After that it was just a flat drink.
After about 2 years, we went back to car camping.
Fizzies. Popular at the time.