=Computing=
* Clacky keyboards and clacky keyboard accessories: http://shop.daskeyboard.com, http://elitekeyboards.com
* Liquid cooling kits: http://koolance.com
* Lattice ECP3 Versa (PCI-E FPGA kit): http://www.latticesemi.com/en/Products/DevelopmentBoardsAndK...
=Tools=
* Stuff from Jetbrains: http://www.jetbrains.com
* Sublime Text: http://www.sublimetext.com
* Reveal and/or Spark Inspector: http://revealapp.com, http://sparkinspector.com
* Fluid: http://fluidapp.com
* Several months of Linode, Rackspace, Heroku, etc.
=Hardware=
* Rascal Micro (Web-enabled, python-driven microcontroller platform): http://rascalmicro.com
* Arduino (because Arduino): http://arduino.cc/en/ArduinoCertified/IntelGalileo
* Phidgets (USB physical interface components kit): http://www.phidgets.com/products.php?category=18&product_id=...
* TI TIVA launchpad (learn C the really hard way): http://www.ti.com/ww/en/launchpad/tiva_c_head.html
* Makey Makey (Turn anything into a touch input): http://www.makeymakey.com/
* Misc wearable stuff: http://www.adafruit.com/category/65
* FPGA development board (Learn HDL): http://www.altera.com/education/univ/materials/boards/de0-na...
* USB Logic Analyzer: http://www.saleae.com/logic
* Lego MindStorms: http://mindstorms.lego.com and hacking links: http://andrew.ghost.io/hacking-lego-mindstorms-ev3-with-java...
* Sparkfun gift certificate: https://www.sparkfun.com/gift_certificates
* Adafruit gift certificate: http://www.adafruit.com/category/14
* A trip to Halted (bummer, no gift certificates): http://www.halted.com
=Food=
* PolyScience Sous Vide: http://cuisinetechnology.com/sousvide-creative.php (or this link: http://www.instructables.com/id/DIY-Sous-Vide-Machines)
* PolyScience Anti-Griddle: http://cuisinetechnology.com/the-anti-griddle.php
* PolyScience Sonic Prep: http://cuisinetechnology.com/sonicprep.php
* Actually, anything from PolyScience
* Chemicals: http://www.biozoon.de/shop, http://molecule-r.com, http://www.modernistpantry.com
* Breville Smart Oven (also great for solder paste reflow): http://www.brevilleusa.com/the-smart-oven-r.html
* iSi Thermo Whip: http://www.isi.com/us/culinary/for-professionals/products/th... and injector tips: http://www.isi.com/us/culinary/for-professionals/products/ac...
* Pacojet (I would like one, please): http://www.pacojet.com/en
* Gastrovac: http://www.cookingconcepts.com/en/appliances/Gastrovac/51
=Other=
* A Dremel: http://www.dremel.com
* Digital Cutter: http://www.silhouetteamerica.com
* Sugru: http://sugru.com
* Aerogel: http://www.buyaerogel.com
* An investment account at etrade, scottrade, vanguard, fidelity, etc.
* Skill badges: http://www.adafruit.com/category/70
* A TechShop membership: https://secure.techshop.ws/memberships.cfm
* Anything from United Nuclear or Information Unlimited (at your own risk): http://www.unitednuclear.com, http://www.amazing1.com
* DJI Phantom 2 Vision (assuming aerial photog appeals more than quadcopter hacking): http://www.dji.com/product/phantom-2-vision
* AeroQuad, APM:Copter, or Crazyflie (assuming quadcopter hacking appeals more than functioning quadcopter): http://www.aeroquadstore.com, http://copter.ardupilot.com, http://www.bitcraze.se
* One bitcoin (but, for etiquette's sake, be sure to remove the price tag)
Edit: adding more