I'm thinking just make a box out of sheets of plywood. What would I need to make it, including the number and names of all the screw and stuff. I was hoping to make the front like a door that you can open.
I'm not a tradesman, but i am an apprentice cabinet maker Obtain yourself a screw gun / drill (and the drill bits) Get 6 sheets of plywood (size is completely your preference) Get a box of 50mm screws Get some wood glue The rest should come quite easily to someone who has experience with DIY or construction, if you're not someone like this, then youtube has all the information you need Good luck!
If you do not have all right tools : saw, drill, drill bits , screw drivers , staple gun , then your best ( cheapest ) option is to get a grow tent . Quality tent 3x3x6 will cost you around $175 , if money are tight you can try Light House grow tent 4x4x6 will cost around $129 . Or you can get a crappy tent with questionable quality on eBay for under $80....