I save beat up clothes to mend less beat up clothes!
If it's just knees, and the rest fit? Shorts or patches!!!
Kid shoes that are unwearable I still put in the donation box. Unwearable items (and frankly, depending on the charity sometimes ALL clothes) are typically shredded and repurposed. Cotton, rubber, etc. DO CHECK WITH YOUR DONATION PEOPLE if you're donating "good" clothes. A lot of donation sites/orgs deconstruct EVERYTHING.
Pans? They're made of metal. They go in my recycle bin OR <grin> DRUMS!!! (sorry, I'm the mom that kept 2 sets of pots and pans... one set for cooking, the second set for toddlers to bang on).
Ugly towels? I need dog towels. Also car or cleaning towels. Also beach towels/ picnic seats. Also gym towels / sports towels. Also "packing" material (storage, shipping, disguising xmas presents, etc.). HINT: Many moons ago I started buy ridiculously expensive CREAM towels (we're talking $80 per bath towel). Well, the oldest are now 12 years old, and they're all perfect creamy WHITE (instead of how 'white' towels fade out to that blueish grey... 'cream' towels fade into white, and stay creamy white). Creamy white goes with everything, and they bleach... so no worry about stains. Because they're super high quality, they're in better condition -and have lasted 5 times as long- and my sister's towels she buys at bargain prices. My grandmother taught me the 'quality' trick when I was little. Cerain things, when you're willing /able to pay for quality, will literally last for generations. I actually own some of her towels that she paid a mint for in the 40's. They were used by her, her kids, us kids, and now my son's generation. Ditto sheets. Ditto furnishings. Ditto several other household things. They are NOT cheap, but we're talking 70+ years of use makes them dirt cheap over the long run.