Set last Skipped Date of selected tracks to today or today minus your number of days.
Better date input is available using New Last Played Date which has a Last Skipped option.
You could also enter a negative number to add days, since subtracting a negative number results in a positive. Let's hear it for Math!
Perhaps Also of Interest...
downloaded 9m 40s ago
Apply selected CD's CD Text to its disc and track tags
downloaded 44m 25s ago
Export selected playlists as individual XML or M3U files
downloaded 50m 42s ago
Sort purchased tracks into discrete playlists by name or Apple ID
downloaded 53m 20s ago
Two scripts copy text from clipboard to current or single selected track's lyrics tag
downloaded 1h 11m 46s ago
Displays the Spotlight meta-data for a selected track in Text Edit
downloaded 1h 17m 21s ago
Re-associate batch of dead tracks with files from selected folder