Store a list of tasks to keep track of start/stop in a simple text file. Software can read, hash, and store a large enough list of items.
Store a list of tasks in a text file for use by the a start/stop timer for the tags and reports. Accessing a separate database for a few dozen items is overcomplicated overkill. It's fairly easy to read in a text file and store it in memory by hash values for quick access. The software wouldn't even have to maintain the file, to make it simpler.