I feed the outdoor stray and feral cats and have for a few years now. If you can make a little house for them and put hay in it. I cannot as Ilive in a apt. building , I do not own my own home otherwise I would do it. You can call animal rescues and shelters and they may have some things you can use, but HAy keeps them warm. Hay is the nest to put inside rather than a blanket if possible. Luckiy my neighbor has a garage that has no door on it so cats go in there for shelter and I put food in there for them. I just had some volunteers come out and they trapped 13 cats and had them all fixed and got their shots. I wish they could all have homes. It makes me sad, but I do what I can.