random.org and number 16 is the winner! Thank you to everyone for entering; I hope to do more give-aways in the future since I had fun.
Congratulations to Spav, the winner of my copy of Donut Days by Lara Zielin! I've emailed you, Spav, so make sure you email me back.
I still have the contest going to win a copy of Anjali Banerjee's Invisible Lives. Go here for the contest entry form.