This project and especially one of the closing notes[1] reminds me of a more mature DIY project to make a mesh node using a simple solar lamp[2]. I love the creativity on display here and I especially appreciate all the links to the other blogs and sites that helped you along the way.

1: > I was talking with a friend about this idea and the storage limitation and he thought it would be cool to have these devices form a mesh network

2: https://meshtastic.org/docs/community/enclosures/rak/harbor-...