The AT&T Universal Business Rewards Card has no annual fee and an introductory offer of zero percent APR on purchases for six months.
Other Visa options include Capital One No Hassle Miles, Citibank AT&T Universal Business Rewards, and Wells Fargo Business Elite.
If your children are interested in super heroes, the AT&T Internet Safety Connections site would be a good choice.
The most basic and affordable phone is the AT&T U2800A for around $20.
The Pearl series of BlackBerry devices -- available from AT&T and T-Mobile, among others -- feature this technology that is like T9, only (arguably) better.