BABYMINT (www.babymint.com): Members can direct rebates to any investment account or elect to get a quarterly check in the mail. Most participating retailers are online only.
EDEXPRESS (www.edexpress.com): Rebate money accrues interest in a trust and can be withdrawn tax-free for educational purposes. A $19.95 fee is deducted from the member's rebates each year.
UPROMISE (www.upromise.com): Offers the most extensive network of retail partners, including 7,000 restaurants. Rebates go directly to one of Salomon Smith Barney's or Fidelity's Section 529 college-savings plans.