There was a giant stack of these old, faded green planters that I thought I'd spruce up, rainbowtize and give one to each of the kids in which to garden.
I set them along the railing, and as we enter and exit each day, we inspect (and sometimes compare) the little sprouts. I think that's the key, to have them somewhere we see daily. Olive is winning with her giant cucumber sprouts, Divine's purple flowers have yet to make an appearance, and everyone else's are somewhere in between. Clover jumps for joy (literally) and claps her hands each time she sees something new happening in her little square foot plot. We had to learn that plants can actually get too much water sometimes. ;)
Check back in a month or two and we may just have watermelons growing on our porch!