There is a lot of interesting data out there which can be used for forecasting.
Consider: https://www.bls.gov/data/ Go there. Click on top pics and then pick a data series and go back as far as you want. Then do several forecasts and tell a story of your forecast. That’s the first one.
Second one. Go to yahoo finance. Pick a stock and then (yes you can do this and its free) download the data and do a forecast of the closing price of a stock. There are some interesting ones. Tesla! Yeah. Tell a story of this forecast.
Managerial statistic