hmmm; i'd say there is always files that can be moved or deleted.
files in temp folders on the operating system, log files, , the already suggested moving of backup files, so many other possibilities to address this quickly.
--help us help you! If you post a question, make sure you include a CREATE TABLE... statement and INSERT INTO... statement into that table to give the volunteers here representative data. with your description of the problem, we can provide a tested, verifiable solution to your question! asking the question the right way gets you a tested answer the fastest way possible!