I really enjoy reading in my hammock. Usually I set it up in my backyard but it’s also easy to take to a park or on a hike. I just use one of those camping ones that packs away to the size of a nalgene water bottle.
Sidenote, I also use one of these security straps on my e-reader. It allows me to read laying down in the hammock or in bed without having to completely hold onto my reader. Definitely recommend.
I do something similar with opnsense and policy based routing. opnsense is acting as both a VPN client and server. The client interface connects out to a commercial VPN, and the server interface listens for incoming connections. Based on what I I want to accomplish I setup firewall rules that use policy based routing to route incoming VPN traffic where it needs to go.
Regarding split tunnel on the client, the Android wireguard app has the option to specify what traffic uses the tunnel based on the application