For true DIY, hack the included cassette mechanism into a solar-powered device using the high performance Miller Solarengine which converts light into impressive bursts of energy! High performance, SCC3733-MSE version.
Looking for a more flexibility out of your Sumovore, but you're not too up on programming? The PICAXE is a PIC-based solution, programmable with flowcharts - and we've added it to the Sumovore!
The BoE-Bot Robot Kit (USB) is a complete mobile robotics kit.
The Robotics with the BoE-Bot Parts Kit turns your Board of Education into a BoE-BOT Robot.
The 3pi is a speedy line follower, but sometimes you just want to add your own hardware to the mix. Here's the expansion board just for you!