Semi-assed auto repair
My wife was finishing some sort of yogurt/milk drink (when I was a kid, you needed a SPOON to eat yogurt but I digress) so I snatched it out of her hands and cut the neck off. Almost as an afterthought I rinsed it because, you know, science, then I scuffed up the inside bottom of it and the top exterior of the busted reservoir neck. I then stretched the plastic drink container skirt thing over the neck where I had just placed some epoxy and then put a few strips of fiberglass on around it to reinforce. Voila, the reservoir tank was complete again and had a screw-on cap and everything. The car functioned quite well until we sold it and presumably afterwards too.
I sometimes sit in bed at night and wonder what the first mechanic that touched it afterwards thought when he was was working under the hood and found himself looking at a car part that entreated him in official looking letters to ‘Refrigerate After Opening‘.