I have just added a blog post to the ceLTIc project site which may be of 
interest.  It describes the ways in which we have made it as easy as 
possible for users to try out LTI Tool Providers:
   - dynamically generating credentials for use in your VLE;
   - an auto-provision URL;
   - an auto-provision button on a website;
   - auto-provision menu of available tools.
The last three of these options use the newly available LTI Launcher for 
Windows application which acts like an LTI Tool Consumer (I also hope to 
release a Mac version of this application).

So far we have 4 different LTI tools which can be auto-provisioned for 
trial periods: WebPA, WordPress, Rogō and Rating.  If you have a tool 
you would like to make available in this way, we are keen to extend this 
list, so please let me know.

The full blog post can be found at:

 
http://www.celtic-project.org/Project_blog/2013/04/Evaluating_apps_the_quick_way

Cheers,

Stephen