We often do demonstrations at conferences we go to, and if we're near you in person we'd probably be happy to do a demo with you too.
Create a card in an existing interrelated system, showing how some things show up automatically. Then go through these to show how one builds something ...
Here are notes from some demonstrations we've done:
2009: Wagn ran the conference wiki — http://2009rcc.org/ Idea to show other user editing when in a conflict. ===== ...
Start by showing what it looks like in an already-built system, uninterrupted, then demo the underguts. (suggestion from Chuck Langenberg and others; he ...
Here's a sandbox Wagn: http://sandbox.wagn.org
Remember to always offer people accounts on wagn.org