Product photography with seamless backgrounds, help with setup

I have a hobby where i use, collect and trade older computers and accessories of particular brands. I spend quite a while cleaning them up for sale, I don't feel that translates into the photos since i don't have any backdrops or particular lighting setup beside a couple of 56gn flashes with umbrellas for lighting.

I've been looking at the typical kind of tents on ebay, but i'd like something about a 60cm to a meter wide. (aprox. 24" to 40" to you non-metrics).

I've also looked at the kind of tables where you adjust the back.

But I have no relation to the quality of the products i've looked at. So I'd like suggestions. That it is fairly easy to fold and store away would be a big plus.

Any tip?
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Blessed are they who see beautiful things in humble places where other people see nothing
.. Camille pissarro