I have a student desk from the 1950s, bought for $15 at an estate sale, including the chair. Works fine for me, used to be the kitchen table but I was asked politely to take my stuff and leave- we couldn't use it anymore. :)
When I'm working on something bigger I move to a 9 foot folding banquet table. I have a frame in the box but I am still moving around the room so I haven't set that up yet. I have plans I bought from Keepsake Quilting for a huge table but don't have the room for it- yet. Must clean the basement and "take over" it.
Barb