Thanks to an error report from one of my backup jobs, I noticed that
/Users/slap/Library/Logs/DiagnosticReports was filling up with Finder crash reports (files of the type
*.crash). These files were being created once a minute. Additionally, icons on my Desktop were blinking once a minute.
Upon investigation, it seems that Google Drive was the culprit. Specifically, Google Drive's ability to update icons to indicate their sync stats. By disabling the "Show file sync status icons and right click menu" checkbox in Google Drive's Preferences window, I was able to stop the crashing.