What happens next?

How to get money out of your clutter as a child
Get 3 bins, the size depends on the tidiness of your room.
Mark 1 bin' throw away' , 1' keep' and the other' sell'.
Once you've finished sorting it out, tell your parents you've finished (sometimes you'll get money just for cleaning your room).
After that, explain that you'd like to have a garage sale and you've researched how to do it. If they want more info, you can always refer them to this page..