Asian stores are a great resource for things like chicken bones and feet that make delicious bone broths.
I simmer all day and then make vegetable soup with the broth. It's so gelatinous you know it's super healthy!
Add beans or dried peas, onion, celery, carrots, leftover veg like bits of corn, peans, green beans. I also like to add daikon radish and/or zucchini very near the end of cook time. I enjoy the texture contrast. I also throw in greens right at the end. Mixed greens are especially nice and it's a great way to use up little bits.
Serve with home made bread and perhaps a bit of nice cheese. Yum!
Egg salad is another favorite.
Maybe nothing terribly original here, but a reminder can be helpful.
I find it helps to think "how little can I spend on this meal" to open the creative floodgates