Components on boards, cheap, convenient :)
If you ever shop in something like www.robotshop.ca
and you (like me) would really like components to be just hooked up & ready, I can strongly recomend anything from "Inex": Say you want an IR-thingey, or a magnetic sensor that just provides you the analouge signal, really do not care to read the manuals and what leg of the component should have an resistor or whatever hooked up..
These things even comes with wires, ready to hook up on Picaxe (possibly others).
At one point, I wanted a sensor to be on a wire, not on the board, it was still easyer to de-solder the component, attach wires, and hook up again - it saved me all the trouble that I hate :D
Featured example: USD 8,-
• Interface for the Nintendo Wii Nunchuck remote control
• I2C interface
Use the INEX ZX-Nunchuck to interface with the Nintendo Wii Nunchuk remote control. Modification the remote control is not required. The board uses a two-wire Interface and is easy to interface with any modern microcontroller.