If you’re working, you know that the money you make is taxable. You also probably know that some investment income is taxed, too. The bad news is that there are more taxable items on the IRS’s list.

If you’ve picked up some extra money through skill, luck, or even criminal activities, there’s a pretty good chance you owe taxes on that cash as well. To avoid being taken by surprise when it’s time to file your tax return, we’ve rounded up some surprising things that are actually taxable.

If you’ve collected any of these, make sure you declare them on your next tax return.