Try TreasuryDiect to Buy and Redeem Savings Bonds and more!
TreasuryDirect is the first and only financial services website that lets you buy and redeem securities directly from the U.S. Department of the Treasury in paperless electronic form. You can enjoy the flexibility of managing your savings portfolio online as your needs and financial circumstances change - all the time knowing your money is backed by the full faith of the U.S. government.
TreasuryDirect offers product information and research across the entire line of Treasury securities, from Series EE Savings Bonds to Treasury Notes. TreasuryDirect accounts offer Treasury Bills, Notes, Bonds, Inflation-Protected Securities (TIPS), and Series I and EE Savings Bonds in electronic form in one convenient account. In addition, with TreasuryDirect you can account for Savings Bonds in a paperless form and even purchase or redeem bonds.
Go to http://www.treasurydirect.gov/tdhome.htm to open an account.