For tablets without OTG
Requirements "Android 2.3.3, Camera 0.5m.p. (not dusty), Charging less than 0.5a (if heating).Set motiondetectorpro or analogs, turn on the Adjust Action screen when you detect movement, check the phone for charging, fix the screen, turn off the screen and not necessary applications from the memory. "
Requirements "Android 2.3.3, Camera 1M.P. (Depends on the requirements), charging at least 0.5a (if the heating can be checked without a battery, go to make a trip).Install ZOOM or analogues. The phone broadcasts video when connected to the conference.
To give children
The new Minecraft Pocket Edition goes to Android 2.3.6, and old on 2.3.3. 60fps can be achieved in the settings (on most of the online music phone 2.3.6)
Install the old versions of Yandex Maps, Navitel or Analogues (if the old Android). Antenno GPS can be pumped (needed a thin soldering iron)
Distribute 2G using the access point (you can set a password or enable connection to specific devices only.
If you often do not include (do not rub the memory), you can store data from old accounts and applications by Yandex Money, WebMoney.