Use the tools you were provided for the purposes you provide.
Excel: Make your own calculations. You know, stuff like how long would it take to walk from Shire to Mordor? How rainy was last year compared to the ones before? Learn VBA and get creative with the macros. Generate art with conditional formatting. Make a macro that actively interferes with everything you write and slowly drives you mad. Ask Matt Parker for ideas on what kinds of fun things you can do with spreadsheets.
Word: Write your own fan fiction. Alternatively, you can paste an entire ebook in word and start reading. Abuse the formatting tools to produce modern art.
Power point: Abuse transitions and animations. See if you can recreate old school flash animations.
PowerShell: The sky is the limit. Get a web browser that runs in the terminal, and chill out on Lemmy.
I try to avoid breaking the routine. Today, my morning was different from normal, and as a result, I forgot to take my lunch with me. Good job!
As long as I put my phone and keys in the same place every day, I will always find them easily. As soon as I break that routine, they just disappear mysteriously.