At April the 4th, 2008, developers from Xebia Group (a specialist software house devoted to enterprise Java architecture, middleware, portal and integration technology) held another Tech Rally (a whole day of technical training for the whole Xebia's Software Development department).
At Xebia, previous Tech Rallies were about Ruby, Grails, CSS/Javascript/Ajax and Oracle Databases. This time it was about creating the best SCRUM tool ever. Quite a challenge for an 8 hour session!
To start with, he group was divided into smaller groups (of approx. 4 people in size) and could pick the technologies of their liking.
The "Wicket Scrum" team, originally based on Wicket, finally turned into a Groovy/Grails/db4o implementation. They focused mainly on the use of an OO database (db4o, of course =) and used the SpringBuilder form Grails to fire up their Spring config.
"Spring modules provides a module for integrating db4o and Spring, which makes integrating db4o in your project extremely easy."
http://blog.xebia.com/2008/04/22/xebia-scrum-techrally/