Additionally, poking them in the cardboard to hold them also gives you a chance to see in which order you removed them.

I've poked them in and then drew a circle around one set of the bolts and labelled them "cowling" and the next ones are "carb mount" and then "head" and "valve cover" etc. and I'll write notes beside different length ones to remind me which specific hole they went in. If you throw all the head bolts in a ziploc bag and one's longer, then it's a bit more difficult to remember where the longer one goes, especially if you don't get back to fixing it until a year later.

Also, record brief video clips of confusing disassembly parts. Like, when I'm taking apart an electric motor and want to remember which color wires go to which lug, I record a video of me pointing to each one and saying the color. If you're doing small engine and the carburetor linkages and springs, I suggest you record yourself pointing how they fit together.