I use recycled wood a lot for my domestic projects. This is one of them. My partner wanted a collapsible table she had seen in a shop. As usual I said I could make one of those! And to the exact dimensions for the space we needed. It's basically two trestles with a removable top, held in place with a couple of wing nut bolts. The wood came from various pieces I had - eg old door frames, some pallet wood, and some skip finds which I keep in my "wood shed"! Because they are different woods and need touching up as well, my pieces tend to be painted!
We have found that although the table is collapsible, in reality it stays up permanently. We like the space it provides in an awkward part of our room!