Some of the Possible Tasks you can take on to Help Prop up the Fannish Infrastructure
(note: if you have other suggestions, leave a comment and I'll add it to the main list)
Fanfic
Fanart
Fanvids
Icons
Meta
Header Graphics
Avatars
Gifs
Filk
Screen Caps
Crafters
Cosplayers
Templates
Layouts
Website Design
Beta Readers
Alpha Readers
Create Rec pages/lists
Reviews
Recaps
Fic finders
Kink finders
Run fandom Challenges, Fests, Exchanges
Fandom/Charactor/Celeb Newsletters (on the journaling sites/tumblr, twitter, etc)
Translators of all types
Episode Transcribers
Episode Uploaders
Subtitles
Fanmixes
(Cover Art)
Podfic (and all associated jobs, technical and otherwise)
(note: see the discussion below on podfic metadata:
http://muskratjamboree.livejournal.com/138615.html?thread=1878391#t1878391)
Podcasts
eBooks
Apps
Programmers
Hosting
Preservation work (for deleted websites, etc)
Fandom Anthropology (Fanlore, Wikis, etc)
Research (for fic, etc)
Reference/Resource Creators
Archivists
Newbie Welcoming Committee! (not a specific job: just...be nice/helpful to newbies!)
Fandom/Pairing/character Intro Guide (or Primers)
Instructional Guides (and seriously, anything you've learned how to do is useful knowledge for someone else)
Social Organizers (local community outings, dinners at cons, etc)
Volunteer with the OTW (Organization for Transformative Works
Volunteer with Dreamwidth (not strictly fannish, but a big part of fannish infrastructure)
Spokespeople
Legal Advocates
Organize cons
Serve on the con comm
Volunteer at cons, including moderating panels
You say you have no time, but you do have some money? Donate to fandom organizations like the OTW.
(Thanks to Darththalia for the photographic evidence *g*:
https://twitter.com/darththalia/status/579339929609715712/photo/1