How to find homes for kittens?

A few months ago a stray cat showed up in my property. We have attempted to catch it and lure it in with food but it’s just not human friendly. We see it eating our dogs food everyday and it’s even friends with our dogs and with rub up on and play with our dogs. We figured no harm we will just leave it alone. Well we soon realize it is a female cat because it had a litter of kittens. The kitten are now 8 weeks and completely friendly with us. I asked around to friends and family but no one wants a kitten. I called the animal shelter to see if they take them and adopt them out and they told me they will just euthanize them. So my question is how can I find homes for them. I thought about just going to the grocery store with them and stand outside until people come up wanting them (I’ve seen people do this years ago) but I don’t know if that’s a good idea.