I’m not online a lot but I will try to be

Then use private nodes:
https://darth-coin.github.io/nodes/private-ln-nodes-en.html

For example: can you run a node from a van? What is the best way to do this?

See the same guide and many more here:

• #439263
• https://darth-coin.github.io/wallets/wallets.html
• https://darth-coin.github.io/nodes/nodes.html