Sure you can. 32 gallon square cans at Walmart for $14. Inside dimensions approx 18W X 17D X 34H. Perfect for a 70 watt HPS from LOWES with some LST depending on the strains. Could yield about 2 ounces.
Rub flat white paint on the entire inside, will take you less than 5 mins. Then cut 3 sides of a door with a razor (wear leather gloves and be extremely careful on this step) Will need some exhaust ventilation tho, 120mm computer fan will work.
Veg mode
Puna Budder, New Purple Power, Blackberry, Thai Skunk, Power Skunk. Sex em
Trained nugs
Home made HPS reflector, homemade scrubber, homemade UVB fixture, homemade 80mm exhaust. Very CHEEP lol