Books, stationery; need to be stored properly to protect them from climate and insects. Need to be protected from unscrupulous adults who desire fire tinder.
Solar-charged laptops can be weather-sealed and are much less useful for unintended destructive uses.
The OLPC XO-1 was very effective for extremely destructive uses.
When the US military was trying to put Iraq and Afghanistan back together, someone there approached OLPC about supplying the XO-1 to the kids. A huge concern was that it could be turned into a really effective IED trigger. There is a camera to detect motion, a DC-capable audio jack for wiring in arbitrary parts, the speakers and microphone for range-finding, the resistive touchpad as a pressure sensor, and of course the WiFi for sending commands. To initiate the explosion there was an audio output jack, USB ports that could be powered on or off, and a screen backlight.
Solar-charged laptops can be weather-sealed and are much less useful for unintended destructive uses.