MERCI can extend any content type into a list of unique reservable items (like studios) or buckets of interchangeable items (like DV cameras). We followed the approach used by Organic Groups, Feed API, and Scheduler and added MERCI's configuration to the Edit tab of those content types.
GETTING STARTED WITH MERCI:
DRUPAL 7 MODULE STATUS
Other then a few difficult/impossible to reproduce minor bugs, MERCI is stable for Drupal 7. If not, please post an issue. If upgrading from Drupal 6 you will need to roll back field_merci_date and remigrate it. More info on migrating the fields is here: http://drupal.org/node/1144136
Current development is focused on a complete rewrite of the base module with special attention paid to the "Feature request" queue. If you are interested in 3.x branch more info is here.
The merci_template module has been removed in the D7 release.
DRUPAL 6 MODULE STATUS
The Drupal 6 version is stable. No new features are expected to be added.
The module is currently maintained by Darrick Servis (darrick) with the financial support of Davis Media Access. If you benefit from this work, please consider making a donation. I'm also available on a contract basis if you need someone to implement or extend MERCI for your use.