I've posted this here before;
I packed up the car with the 5 inch scope, the tripod, power cables, food, gear etc and drove 65km to Linden on a REALLY clear night. I got there, opened up the car, unpacked the scope, set it up, aligned it and then realised that I had left my box with all my eyepieces in the garage at home.
I thought..."why dont I just use the binos", nope, they were in the box too. Then I thought...."I know, the webcam connected to the PC", nope, in the box too!
So, instead of packing up and heading an hour home with my tail between my legs, I realised that I had a 6 x 30 finder on the reflector, so I spent the next 90 mins looking at the Milky Way like a sad astronomical pirate. Yeaaarggghhhh!
Still, I had a lot of fun anyway.
I now keep a basic 15mm eyepiece in a bolt case in the car just in case I have another Homer moment.
Cheers
Chris