C'mon! Consider yourself drawing the American resistor sign in MS Word or Paintbrush with only your mouse... Note then, how much time it took (1-5 min) and divide that by how neat and professional your resistor looks on a diagram (1 to 5), that's the amount of frustration you get...

[rant on]
American standard... Its roots are in the Imperial standard, which purpose was to complicate things so much that they are less accessible for the poor people, I believe. I.o.w., who can't pay for higher education or/and for a pair of compasses.
[rant off]

Back on topic. I'd get some PowerFilm scraps instead (I did already actually). Much more powerful than what could be found on any garden lights. Much smaller, lighter, shatterproof, waterproof. The current required to light a diode is nothing compared to what a Li-Ion battery needs to replentish its juice.