Given the low cost of boards from such as JLCPCB, I decided to design some jellybean boards. Simple functional circuits like voltage amplifiers, comparator, power supplies etc. Have a look at my schematic and see what you think. I have space for one more board. Most are about 30 x 18, some a bit bigger. The design is one file, boards can be cut apart with a hacksaw. Not going for routing or v groove to save cost.