Makeshift rear light

I work in a bike shop and put my bike in the stand to do some tinkering. I forgot to put my rear light back on my seat post before setting off home. Halfway back I realised I was missing my rear light but luckily had a spare button front light on my handlebars, and living in Manchester, soon found some debris on the road (a fragment of tail light) to make it a red light. It managed to get me home safely. #hackorbodge