couple of suggestions from items discovered recently:

When draining hot transmission fluid into a plastic drain pan, and
dropping the drain plug - just use an inexpensive telescoping magnet
tool to pick out the drain plug easily

When re filling the transmission, rather than repeatedly adding small
amounts to finally get the right level, since I'm usually adding oil
too, and the bottles have measure marks on the side - use a large
funnel to pour the old fluid carefully in the empty oil bottles to
measure the correct amount of new fluid needed.

When washing the car, and drying with a chamois (good idea since it
will not scratch and also is said to polish the finish) use two. I just
kept the old one with some holes when buying a replacement. After using
the first to remove most of the water, the second works well on glass
and finishing up, much better than trying to wring every last bit of
water from the first. Starting again with a second dry chamois just
makes the whole process easier.