Good job, OP! I read that some old-school touring guys used to use a cork in the seatpost. Then they poke a few spokes into it. But this looks easier to do. I would only carry spokes if I were on a long unsupported tour like some others. I started using 32-spoke wheels for commuting. So I can suffer a broken spoke without too much trouble by releasing the break and still get home. I only carry a spoke wrench to tighten any spokes that may come loose on the rear wheel.