Once after driving to the field for about two hours of horrific traffic jam I’m getting there and realized I forgot the canopy of the midstar 40, it sits on the wing and prevents from the muffler cr@p to get into the fuselage, darn it I forgot it and there is nothing to do im not flying without it, the instructions said specifically not to fly without it.

Ever since this canopy never left my car again even now that im not flying the midstar anymore its still in the car.
Besides that I have a second tool box of spares of all I need at the flight line charger, wrenches, plugs, fuel pump, rubber bands, props, spinners everything you can think of doubled, that lesson was learned.