Last week I had to move a big box across town. I could've gone home to get the cage first but then I thought screw it, I'm a man I'll improvise. It was shaped like a pizza box but bigger & taller. Took up my whole banana seat, so I was switching between standing up and sitting halfway up the tank. Worked fine but wouldn't want to do it for a longer trek.
I vaguely remember a few stories about entertainment units or TVs, so give me the crazy shit. And no your own fat ass does not count.