It's cool to see the robot coming together, but there are still some significant challenges at this point..
1) Do we want to include two sensors to trigger two different effects? How can we program that?
2) Can we trigger multiple effects (two LEDs & vibration motor) off of one sensor? How can we modify the circuit to make everything work? (In particular, we have one DC motor that would be fantastic but it doesn't run off of the 5 volts from the Arduino, so..)
These are pretty basic questions, and I know there are solutions out there. It's just a matter of finding the answers and learning more.
Got any ideas? Want to drop some knowledge? Tell us about it in the comments.