Found a deformed kitten, what should I do?

I just found a kitten that's a few weeks old and its deformed. It wasn't gonna make it on its own outside, so I picked it up. Basically it's two back legs are completely useless and it has no tail. It's anus is prolapsed a little. We can't find any place to take it in and today is Sunday so a lot of places are closed and then tomorrow is Memorial Day so everything is going to be closed. Is there some place we can take it that won't put it down? It's not in any pain and it's learned to hobble on its two front legs. I just feel so bad taking it to the humane association because they'll put it down.