I see a lot of specific examples, but here is a good engineering guideline: do not skimp on physical interfaces. **Anywhere energy is changing form or if it touches your body, don’t skimp on those. **
For example
tires
bicycle saddle
heaters/furnaces
electrical inverters
keyboard
mouse
engines
shoes
eyewear
clothes (buy used if necessary, but always buy quality clothing)
Quality usually means more money, but sometimes one is able to find a high quality and low-cost version. In my experience though, trying to find the cheap version that works well means trying so many permutations; it would have been more economical to just get the more costly version in the first place.
I see a lot of specific examples, but here is a good engineering guideline: do not skimp on physical interfaces. **Anywhere energy is changing form or if it touches your body, don’t skimp on those. **
For example
Quality usually means more money, but sometimes one is able to find a high quality and low-cost version. In my experience though, trying to find the cheap version that works well means trying so many permutations; it would have been more economical to just get the more costly version in the first place.