The Cerberus, it sounds really smart, and it really is! It provides a great solution for the age old problem of never having the right USB cable. This is a 3 in 1 USB cable that has a Mini-B, Micro-B and Standard-B on one side to a single USB-A male connector on the other.
Behold, the Hydra! It doesn't have seven heads as you might expect, nor is it even a dragon, but it is a great way to get 5V to your project via 3 separate power connections broken out from a USB-A male connector.
This rainbow jumper bundle is quite handy for making a color-coded wiring harnesses. It's also suitable for all kinds of 0.1" spacing applications like breadboarding or connecting between headers on PCBs!
The Parallax StampWorks Experimenter Kit is a comprehensive collection of everything you will need to learn about efficient embedded design. This is a great package for those who want ALL the accessories!