The carrying strap is for short trips in the area I am camping in. It is also good if I have to grab & run.

Many types of things can be carried in a tube the size that I have made.

My food tube is painted - desert tan

I have a 4" x 1' tube that I carry my cell phone external antenna, misc electronic parts (pigtails) in. I couldn't help myself from adding a "radiation warning sticker" on the outside. It's a warning label we use in regards to electromagnetic radiation around our transceiver antennas (radar & radio) and I have spray painted this tube - pine forest green (or Detroit Diesel Green)

My 3rd tube measures the same as the Food Tube and is also painted desert tan. I am storing T.V. cable parts in it at the moment.

Glass is plenty durable as long as you aren't going to plow or shovel through it.

But metal jars rust, so use plastic. Plastic quart mayonnaise jar lids usually fit quart mason jars just fine. A gasket wouldn't hurt, either.

Sue