use the search bar and find homemade park/box/rail threads, but im feeling saucy so........
the way i built mine was:
2 16 foot 2x4s
3 8 foot 2x4s
1 regular sized piece of sheething
16 sq feet of plexi glass
screws
take the sheething and cut it into 11-12 inch wide strips, make sure they are all even, and then find several objects of uniform width such as small paint cans or extra pieces of 2x4 and make it so the two 16 foot 2x4s are evenly spaced and perfectly lined up, then screw the strips of sheething onto the skinny end of the 2x4s, this creates the top of your box. Then, on the inside of the two 2x4s attached to the sheething, screw your legs on, use as many as u wish and make em as big as u want, and just throw another 2x4 going perpendicular to the box across the bottom to prevent it from tipping over. Then use either plastic glue or screws to secure ur plexi glass to the box. WHen you are cutting the plexiglass, use a circular saw, not a jig saw, a jig will melt it.
Ski New Jersey