Does anyone have any job ideas for a 12/13 year old that I could do on the weekends
It doesn't really matter if you are 12 or 13.
I'm going to copy this from a previous question I answered.
"Babysitting Mowing lawns Shoveling snow Housecleaning for neighbors Crafts (sewing, cross stitching, crocheting; something I am getting into) then she can sell them on Etsy.com or at craft shows in your area Pet sitting Walking dogs
To get clients lined up, she can print fliers (if you have supplies at home, if not she can write some out, print neatly) then go door to door with an adult or older teenager to ask neighbors if they are in need of her services. "
Are you 12, or 13?
That makes a difference.