When I was a kid, if you forgot your PE kit, you did it in whatever was in the lost and found box. There was nowhere to hide. If you left your magic shooting boots at home, well, it was time to find out if it was you or your boots.
We often complain about a lack of space, money, or time. Yet as Churchill said, now that we have run out of money, we have to think. When you have nothing but your craft, no magic boots, no fancy sound engineers, just you and your skills —see what you got.