Santa: What do you want for Christmas, little boy?
PZ: Multi-beam fast-steerable optical tweezers!!!
Santa: You'll pluck your eye out, kid!
This is the part where I look horrified and start to cry, right?
Really cool. Did you know that you can use the laser pointer (yup, the kind you use for giving talks) to play golf with neurons? You can push them around the plate until each cell is sitting inside the little hole on bottom of which is an electrode so you can monitor electrical activity of each neuron.