Challenge 19 is draw something you've made. We recently replaced part of our fence and the old wood inspired me to design and then make, with dh's help, 2 yard sculptures: a giraffe and a cow. Not all family members are enamored with them, but at least they are tastefully displayed in the backyard.
Challenge 180 is paint something in my favorite color. So I doodled some cows with all the different blues on my watercolor palette. I had just been out sketching cows, so they were fresh on my brain.
And challenge 185 is draw a cat, of which we have 2, and I draw them all the time, but Gilbert decided he'd stretch out in the cool grass and pose for me.