Moms what would you do im my case?

My LO just grew out of his infant car seat husband just lost his job Im working but only part time cause my boss cut all of our hours due to business being horrible and I seriously have no money to buy him a carseat I tried craiglist the ones I could maybe skimp up some money to buy were expired car seats ppl were selling and I called my local WIC office they dont have a car seat program for low income families and I also looked online for car seat programs in my area and they only offer infant car seats, What else can I do Im not on welfare or anything like that I don't want to be I mean were struggling but were barley skimping by. Im so frustrated.