stealth grow box

this is basically my design for a small grow box for 3 plants to go until i can't grow them in the box anymore, then i'll relocate them outside.



its a cardboard box, covered in tin foil for a poor attempt to reflect light, a fluorescent from the top, a lil air filter to replace air inside box, and a desk fan to bring fresh air into box. what should i do to make this better? and to be fair im not trying to spend any money or grow anything amazing, i just wana give it a go.

also how could i humidify my box?

 

i just made sumthing similar but much higher budget. use sum damp spondes to humidify.