I think another reason I was grumpy yesterday was that, while mowing the lawns, I managed to take out some of our solar powered lights. I'm not always a huge fan of lights in the garden to be honest. Last year we got some blue lights that must have previously been used on an aircraft carrier to guide planes down to land. To say they lit up the neighbourhood was something of an understatement.
But the ones we got this year are much nicer, giving out a very pleasant glow. At least they did until I wrapped their cable around the strimmer and tore it out of the power box. Oh well. Only ten quid to replace. And I now have a battery box and solar cell to play with. And enough space in there for an esp8266 and a power inverter. And fifty leds in a chain to make a "pimped up" Pixelbot.