I was reading Currency Marketing (note 1) founder Tim McAlpine's ten-part blog opus (here) on so-called Challenge Marketing, a mix of social media, sweepstakes and viral marketing. It's great reading, especially if you are thinking of embarking on a new-media marketing campaign.

In part 4, Tim created a list of media available for marketing messages. I started with his list, added to it, and rearranged the topics. Use this as a cheat sheet in your planning meetings to make sure you've covered all the bases. I know I've missed things, please add to the comments and I'll update the list.

• ATMs
  • Screens
  • Enclosures
  • Receipts
• Blogs
  • Posting/commenting on your own blog
  • Guest posts on others
  • Commenting on other blogs
  • Asking for reciprocal blogroll listings
  • Sponsored blog post (tread carefully)
• Branch
  • Posters
  • Brochures
  • Plasma screens
  • Floor decals
  • Window decals
• Call center
  • On-hold messages
  • Press 1 for more info on ____
• Charitable activities
• Cinema advertising
• Door-to-door
  • Flyers
  • Conversations
• Ecommerce
  • Powered by your brand
  • Advertisements on confirmation screens/email receipts
• Direct mail
  • Postcard
  • Letter
  • Welcome packages
• Direct-to-desktop computer applications
• Widgets
• Toolbars
• Buttons/alerts
• E-mail
  • Direct messages to house or rented list
  • Advertisements/sponsorships within third-party email letters
  • Advertisements within triggered account alerts
• Joint marketing (with other companies)
• Mobile
  • Text messages
  • Downloadable app (iphone, Blackberry, Android)
  • Advertising in other apps
  • Sponsoring other apps
  • Featured at carrier/manufacturer site
• Newsletters
  • Your email/printed/RSS  
  • Third-party properties
• Online advertising on outside properties
  • Banners and other on-screen ads 
  • Advertorial
  • Sponsorships
  • RSS feed ads
  • Social networks (Facebook, MySpace, MSN, others)
  • Search engines (Google Adwords, Yahoo, Microsoft, others)
• Online advertising on your properties
  • Main website
  • Online banking site
  • Logon/logoff splash screens
  • Microsites/landing pages
• Outdoor
  • Billboards
  • Transit
  • Wall projection & other non-traditional outlets
  • Building site signage (construction loan clients)
  • Vehicle signage
• Print/newspaper/magazine
  • Display ad
  • Classified ad
  • Column/op-ed articles
  • Inserts
  • College and other niche publications
  • Yellow pages/programs/directories/etc.
• Promotional item giveaways
• Public relations
  • Appearances and interviews
  • Press releases
  • Spokester (see Currency Marketing's Young & Free)
• Radio
  • 15/30 second spot
  • Advertorial
  • Sponsorship
• Social media activity (note 2)
  • Facebook
  • MySpace
  • LinkedIn
  • Microsoft Live
  • Twitter
  • YouTube
  • Forums
  • Wikis
• Sponsorships
  • Sports
  • Events
  • Charitable efforts
  • Schools
  • Green efforts
  • Anti-fraud education
• Statements
  • Stuffers
  • Messages
  • Envelopes
  • Estatement advertising
• Street-team marketing
• Sweepstakes (on- and off-line)
• Telemarketing
• Third-party locations/publications
  • Advertising/messages
  • Signage
  • WiFi sponsorship
  • Billing statements
  • Websites
  • ATMs/kiosks
• Television
  • 15/30 second spot
  • Product placement
  • Sponsorship
  • Infomercial
  • Online streams
• Word of mouth

Notes:
1. Tim McAlpine has achieved near-rock-star status in credit union social media circles as the mastermind of the hugely successful Young & Free campaign.
Update: 18 March 2009, Tim posted a comparison of the latest Y&F campaign at South Carolina Federal Credit Union compared to the original Alberta one. The latest version is up in every category, a partnership with a local radio station is credited with part of the gain.
2. If you need examples from outside banking, here's a 2-part wiki (here and here) created by social media guru Peter Kim with almost 1000 examples of social media efforts by various brands.