As an Agile Coach, I can't stress enough the importance of teams engaging in fun, not-necessarily-product-development-related activities -...

This is a variation on the classic "Flip the Pennies" game, which we played in my Intro to Agile class many years ago.

The game and its funny characters to illustrate a couple of the key Agile tenets - distributed decision making and team self-organization.

In addition to TechDebt, Agile teams must watch out and burn down ProcessDebt and SocialDebt.