Too many to list. I have the drama that I get an idea in my head and it runs away with me.
Like the time I went to see Jano for a brew one Saturday and bought a car because I had the money and it was there then the wife found out and it literally nearly sparked a divorce.
Or when I went to AH fabrications to have some tabs welded on a GRS intercooler and ended up ordering a bespoke radiator and intercooler.
Or the 2.1 ZVH Fiesta sleeper I bought just for the engine and management and they turned out to be the only UNUSABLE parts fitted.
Or the Cosworth Replica I bought on eBay without viewing and was delivered while I was at work which my brother put on a ramp and the rear chassis rails disintegrated under its own weight.
I've made a lot of mistake in my time