Family members comes to mind. If not, the best way to build up your credit again is with a secured credit card. I got a $500 secured card back in my 20's and within a year to 18 months, my credit was good again. Words of advice: 1) don't ever be late on any payment on the card 2) use the card every month
Check out the Small Business Administration web site: www.sba.gov If you are a woman or a minority they have special programs to assist you with getting the credit you need.