In my opinion, I believe Excel would be best used for any project really. But it will be most helpful when it comes down to reports and finance data and things like that. I would do something like how much income will I receive over the next few months to a year. And I will create a graph sowing my income for each month. But like I stated earlier, Excel is mainly used for graphs and almost every project has a graph so, it would actually be good for all things.
Hope this helps! :))