I think the aeropress coffee press was very well designed. It's made of three sturdy, plastic parts that wash easily and last a very long time. It makes a great cup of coffee. https://aeropress.com/
I'm also impressed by the MSR whisperlite international camp stove. The international edition is designed to work with a variety of fuel types-- white gas, kerosene, etc. The stove compacts down to a very small size. It produces a jet sufficient for boiling a pot of water in less than 10 minutes. It can be easily maintained and there is a market for parts. https://www.msrgear.com/stoves/liquid-fuel-stoves/whisperlit...
I'm also impressed by the MSR whisperlite international camp stove. The international edition is designed to work with a variety of fuel types-- white gas, kerosene, etc. The stove compacts down to a very small size. It produces a jet sufficient for boiling a pot of water in less than 10 minutes. It can be easily maintained and there is a market for parts. https://www.msrgear.com/stoves/liquid-fuel-stoves/whisperlit...