It's not much, but if you want to contribute to the network easily you can host a Snowflake entry point, which allows users from heavily censored countries to access the Tor network.
How so? Are you talking about just the technical parts of running a server, of interactions with law enforcement an other third parties (I would a non-exit node to avoid these, but who knows) or about some kind of data/metadata you are able to collect?
It's as simple as installing an addon or leaving this page opened and turning it on: https://snowflake.torproject.org/embed.html
https://chrome.google.com/webstore/detail/snowflake/mafpmfcc...
https://addons.mozilla.org/firefox/addon/torproject-snowflak...