
Everybody has a cardboard box, not everybody has a lot of space. This is something you can do for the cost of whatever your last online order was plus the seeds and keep on top of your fridge. The materials are ubiquitous and the setup is simple. It makes you wonder hmm, why am I procrastinating doing this? This is how you prompt people to actually make positive changes in their lives.
Point out in the image file where this is relevant to the topic in the OP, please.