How many collectibles are there, and in what chapters can I find them?

Quantum Conundrum released today, and I'm thoroughly enjoying my time solving these puzzles, and hunting for collectibles.

Being a completionist, I hate the idea of missing a collectible (especially if there is an achievement involved).

Just how many are there? If possible, where can I find them?

^{Note: I am not asking for detailed information on each collectible. A simple "This chapter has this many" or something of that sort will suffice. In the event the total number of collectibles is too high, I will be removing that part from the question.}

According to the Level Select/Stats screen, there are 24 collectables total.

You can also view the number of collectables in each chapter from the level-select screen, including how many you have (or don't have).

If you are missing a collectable for a level, it will be grayed out

The specific levels they are in:

Blue Wing (8 total):

• Robot things
  • Air Raising Scheme
  • Stairway to Fluffy
  • Is this the real life, is this just fan-tasy?
  • Springing to New Heights
  • Mind the Gap
  • End of the Beginning
• Blueprints:
  • A Fluffy Journey of Discovery
  • Around the World

Yellow Wing (8 total):

• Robot things
  • Ticket to Ride
  • It's Slow Throwing from Here on Out
  • Is it Safe to Ride?
  • The Odds Are Stacked Against You
  • A Boost of Confidence
  • Catch and Release
  • The Path to Higher Learning
• Blueprints
  • What Goes Around...

Red Wing (6 total):

• Robot things
  • The Safe-est Way to Travel
  • Going Up?
  • A Course of Matter
  • Flipping Out
  • Choose Wisely
• Blueprints
  • Nothin' but Vat

There is also a robot-thing in the Uber IDS level and one in the Research and Development Lab (which requires anti-gravity and slow-time to get to).