I need some help with my growbox

The hinged door I made won't stay shut. It's a mini size dresser.
Do you guys have any better ideas to building a door for a small medium size box?
Please & thank you!

Put a latch or a magnet on the door. If you're broke then you can use 2 nails and a string. Can you upload a pic of what you have and show what the problem is?

I think I have an idea of what to do. but may you please explain the 2 nails and string method? and how do I make it light tight?

If I were to go the latch or magnet way, how much would it cost

It depends on the setup but less than $20 for sure. The 2 nails and a string would be difficult to make light tight. You could use some weather stripping in the door I guess. I really need to see the cabinet to give you a better idea.

I got it. Thanks for the help, computergroove.