What would be some good yankee swap gift ideas?

What would be some good yankee swap gift ideas?
Every year my family goes to a Christmas party with more family. There are secret santas for kids that havent graduated high school yet and there is a yankee swap for any adults or kids that have already graduated high school. We need some ideas on what my family can get to put in the swap. The amount of money u spend on a swap gift is about $30-$40.

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