123 Robotics Experiments for the Evil Genius by Myke Predko is a great starting point for anyone who is just interested in either electronics or robotics.
This is a handy AVR programming cable that incorporates both the 10-pin and 6-pin ISP programming interfaces.
The 28 Pin SOIC Adapter lets you program 28-pin SOIC package PICmicros.
The 8-Pin and 14-Pin N-SOIC Adapter gives you the ability to program 8 & 14-pin N-SOIC package PICmicros.
This a high-quality stereo jack is great for use with the PICAXE download cable.
The EFX-Tek RS-485 adapter is an ideal solution for putting multiple microcontrollers on a custom network.
The Prop Plug is a compact USB to Serial connector for microcontroller programming and communication. We're about the best place in the universe to get them!
Ever need a convenient way to log 4 channels remotely, and don't have a lot of time to mess around programming up your own? PICAXE to the rescue!
The LAB-XUSB Experimenter Board is a premium development platform for PICmicros, with LCD and keypad built-in.