@savedough - Here are a couple of ideas for you for the harder ones :
For the squash puree
Mix equal parts greek yogurt and squash puree, plus pumpkin pie spice (or just cinnamon) and a little maple syrup. This is good for breakfast, bonus points if you have some toasted nuts to sprinkle on it.
Try this recipe for baked pumpkin oatmeal :
https://www.katheats.com/peanuts-the-peanutFor the carrot pesto
Try doing a pesto swirl bread in the same way you'd make cinnamon raisin bread. Just lay the dough out in a rectangle, spread with a thick layer of pesto, roll up and place seam side down in a bread pan.
Brush onto thin potato slices and bake. This is actually super delicious if you then put these potato slices on a pizza crust, cover with more pesto, and some parmesan cheese.
Chicken pesto pasta - cook a cubed chicken breast and some mushrooms together, toss with cooked penne, pesto sauce, toasted pine nuts, and finish with a chopped tomato.
Oh, and those pineapple cores? Put them in a mason jar, cover with vodka, and leave alone for a while. Excellent in summer cocktails.