What is the coolest thing you've done on your Android phone?

• I used it as a Web Server.

• • PAW Server for Android - Apps on Google Play
• As an IP webcam.

• • IP Webcam - Apps on Google Play
• As a spycam

• https://play.google.com/store/apps/details?id=com.jwork.spycamera.candid3
• As a second display to my laptop.

• • spacedesk (remote display) - Apps on Google Play
• As a heater in winter.

• • https://play.google.com/store/apps/details?id=hqt.apps.hand.warmer.free
• As a Bitcoin miner (stupid idea)
  • Sorry. The app that I used is no longer on Play store.But you can search for it on YouTube.
• As a long exposure photo taking device.(not available on most devices)
  • Zuk Z2's stock manual mode
  • For other devices:https://play.google.com/store/apps/details?id=com.flavionet.android.camera.lite
• As a remote for PowerPoint presentation.

• • Office Remote for Android - Apps on Google Play
• As a remote control for my PC.

• • https://play.google.com/store/apps/details?id=com.steppschuh.remotecontrolcollection
• As a media server for all devices in my local network.

• • https://play.google.com/store/apps/details?id=es.mediaserver
• As a light strobing device for public entertainment events

• • https://play.google.com/store/apps/details?id=today.app.a.amusicstrobe
• And the last one is kind of funny and I didn't do it
  • Using it as a candle for a candle light dinner date
  • https://play.google.com/store/apps/details?id=com.soonsoon.SoonsoonCandle

All the above apps are used by me at some point of time.

Use these apps and give some feedback. Any better alternative for any of the above is welcome.

:P

Emojis are cancer.