I use "A/V" carts made to hold televisions and projectors for schools and libraries.
I get them from the county surplus sale for $5 each.
These are the ones that are roughly 18x24 or 30" and come in 2 standard heights- "counter height" and "tailgate height".
They are also the ones made before the "anti-tip" design.
I love these so much I have around 8 of them.
Extremely versatile and light enough to throw into the truck and take with.
I haven't had anything bend or brake one yet.
That is a nice looking cart. Cool vintage feel and heavy duty!
