Here is a quick photo of our tables, about $80 worth of lumber and about 2 hours to put them all together
materials:
6- 8' 2x6
2- 8' 4x4
2- 8' 2x4
plus whatever you want to use for a table top, we lucked out, the building we are in used to be a huge woodworking shop, they had a skid of 1.75"...