Did you ever sell on a flea market?
We thought our basement was too full of stuff and in our town hall there was a flea market.
We packed boxes and went- haven't done that for more than 20 years.
We sold books, fashion jewelry (like an enameled pendant out of the 70s for 2 Euro) and lots of kitty stuff (like wooden kitties and ceramic kitties) and earned 80 Euros :D
The most expensive thing was a pot in which you can make your own sauerkraut :D which we had from Siegmar's parents. Nobody makes their own today but we sold it for 10 Euros.
We feel quite rich today ;)