I have tried:

• Wearing a vibrating compass anklet for a week. It improved my navigational skills tremendously. I have low income, but I would definitely buy one if I could afford it.

• Listening to a 60 bpm metronome on a Bluetooth earpiece for a week (excluding showers). I got used to the sound relatively quickly, but I most definitely did not acquire an absolute sense of time. However, I noticed that during boring activities such as filling out paperwork, the ticking itself seems to slow down.

I will try:

• Wearing an Oculus Rift that shows the Fourier Transform of what I would normally see. I'd like to know if I can get used to it, and if it improves my mathematical intuition.