MoodleBox
Small and mobile
Small footprint mobile Internet independent device that provides a wireless network to smartphones, tablets and computers. Moodle 3.5
Full-fledged Moodle learning management system that enables to supply learning activities and to share files with your users. Wi-Fi Access Point
When connected to your ethernet network, the MoodleBox provides Internet access to all devices that are wirelessly connected. Free and cheap
The MoodleBox is a free project, a platform based on Raspberry Pi 3, and very cheap. The whole bill of materials amounts to about $90.