Reports
When creating a report, I like to filter on 'Created Date'. I like to pull all projects/tasks that were created in the past week (not last week or this week, but in the past 7 days. My suggestion is add "Past 7 days" and "Past 30 days" (perhaps even "Past 90 days") to the options.
I would also love to see these options in the filtering section of widgets as well. I actually came here to find out if "last week" would show me projects completed in the last 7 days or literally last calendar week. IMO "past 7 days" would be much more helpful to me here.