We have the garden bug. It started with an extra tomato and melon that a friend did not want. Then we picked up a few end of season rejects from the local garden center (peppers, squash etc.), knowing that it was probably too late in the season to expect much from these. The kids had fun planting though.
"What else can we plant?" The kids begged. So we found some cabbage and brussel sprouts...which should do well. Some stevia, which we can bring inside when it gets too cold. Carrots, lettuce and kale seeds which we planted over a week ago.
Lots of little babies popping up.
Too many actually. A few days after we planted the carrots we had the following pop up. Thought they were carrots although they did not really look like what baby carrot leaves might look like....any ideas???
A few days later, up come the baby carrots. Can you tell from the mass of babies that the kids enjoyed adding the seeds. 
This is a new house for us....not sure what the previous owners planted in the beds except roses and onions. So these mysterious babies could be flowers or veggies...or weeds I suppose.
This little onion was here before us...I let it go to seed hoping for more.