I need to make a box to hold one plant

Ok so i made a box a while back to hold one plant that i started from the seedling on the 12/12 light setting to have a mini plant. the box worked ok but im looking for something more. For one my box wasnt as deep as it needed to be and two my lights hung to low to the plant, but in the end i ended up with one mini purple kush plant. So im just looking for ideas on how big the box should be, thanks.

Or does anyone know where i can buy pre-made boxes at???

Try stacking 2 or 3 rubbermaid plastic tubs, and cutting out the center section, so it is one large chamber. Add lights, ventilation, and circulation, and its good for 3-5 small plants, or 1-2 medium sized plants.

Your could try my little DIY grow room and use a smaller fridge (bar fridge) Then it'll be sealed and stealthy too!