Our dishwasher was leaking from the drain pump, so I took it out and had a look - the seal looked fine but mucky, so I cleaned it up and put it back together. It still leaked. So I sought the correct o-ring, but lacking tools to measure it accurately, I emailed the manufacturer in China and the supplier in the UK (Currys). The Director of the pump manufacturer in China replied first, by about 4 days. However, I couldn't find the correct size o-ring anywhere, and even the importer suggested by your man in China couldn't help. However, Currys eventually replied and told me that I could get one from their parts department for about £6. £6 for an o-ring .3mm larger than the ones I can get for 40p from the hardware shop? Er, no ta. I wrapped the old one in PTFE tape and slapped it back in, and it's been fine for about 6 months so far. I've also replaced the drive belt on the tumble drier - that was tricky as again I didn't have the correct tools so I got a few cuts off sheets of metal I couldn't remove, but that's been going a few years since.
A few years back we were off camping with the massive tent, which means we needed to use the trailer I'd bought for £50 a few years earlier, because it seemed liked a bargain and the car had a tow ball. Only a few days before we left I realised that although the bike rack fits to a bracket so in theory you can tow and fit the bike rack, the trailer doesn't leave enough clearance between it and the car to fit bikes in. Bugger. So then I got to thinking about putting the bikes on the trailer, but I didn't fancy stacking them sideways. And then, leaving work one day I spotted some decent bits of timber in a skip, and an idea hatched. I cut the timber so I two pieces that stuck out over either side of the trailer, then looped ratchet straps around the, so they crossed under the trailer, so I had two bits of wood across the top of the trailer and sticking out the sides. I ratchet strapped a pallet to the top of them, which served as a way to support the kids bike vertically, and then hung the two adult bikes one per side, with them strapped to each other over and under the trailer. It looked a mess, but it worked.