sorry no photos
I used to use a big shallow oval 12"D x 48"L x 24"W (ish ?)
a galvanized water/feed troth type deal, I bought from Tactor Supply
had it for years, fit on my bench with a lil' straightening up the bench...
Or put it on top of my roll around cheap plastic Husky tool cart on wheels...
I don't have it anymore, I may need to go get another one...
I would put an 'grate' spaced up a couple inches 2" x 2" sq. tube from the bottom,
so it's out of the liquid, held a bunch too, gallons on the bottom,
that I made from expanded/perforated sheet metal/stainless,
with like 1/4 holes, cut it to fit nice
parts/nuts bolt or most lil' pieces wouldn't fall thru, just the liquids/grit or dirt,
it had a lil' spigot on one end to drain fluids, was pretty dang handy
& bonus that it fit under my old engine stand too... (sort of too long but OK)
That thing seen more of the USA than most people I know, in my trailers for years
mostly for servicing Lenco's/Jeffco's, a few Powerglide too...
I disliked getting fluids everywhere, sort of a pet peeve...
It rusted out, after I left out it in the shed for years, after cleaning it really well
**** retentive me, didn't want to put a dirty pan in my shed

me not doing my trans work for a while...
Never thought it'd rust, being galvanized & covered in trans
fluid or oils forever...
I got the idea from my 'great uncle Tink' from in his shop/farm/ranch,
he did a lot of dirty work/trans or engines on semi's or tractors,
he had a much larger version than I had, his was on wheels too...