Walmart has the Graco LiteRider Click Connect Travel System (Signal) for $80 with free shipping. List price: $135. Provides a 1-step, secure attachment of infant car seat to stroller, with an audible click, ultra-lightweight stroller weighs less than 17.5 lbs, so it's easy for parents on-the-go.
eBay has the Oregon Scientific SG268 Interactive SmartGlobe w/ Smart Pen for $40 with free shipping. Features 19 learning activities, three game panels, and requires three AAA batteries.