sleepybrett parent
Back in the hayday of lan parties in like 1995-1997 my only monitor was a absolute boulder of a 21" viewsonic (this is pre flatscreen or rather pre decent flatscreens, you could get like 15-17s but they were expensive and absolute trash). One night coming home from the bars, half drunk, in an alley my friend and I found an abandoned (maybe..) horizontal-able handtruck. Made the lan party load unload so much better.
Also 10-base-2 [1] Ethernet where you always had to debug a dodgy terminator.
In the previous century i visited many lan parties with my absolute beast of a pc case (an old Siemens 4U 19" metal monster where i stuffed an Amd Athlon setup in with a bunch of harddrives) that i got for free from somewhere. Then carried the huge CRT screen and placed it on top of it. It was insane, i was young (and insane), but i got it all dirt cheap. Most people loved it. And even back then repurposing discarded or super cheap hardware for as long as possible for as many functions as possible gave me much joy and saved me a great bunch of money.
If i had to do a "lan party" these days i'd just connect my Steam Deck to some hdmi beamer and play Jackbox games with a bunch of people.
the height of 'gpu' in my lan party days was a voodoo 2 card.