Summer jobs for 13 year olds?

This is just a suggestion, you said you were artsy and creative.. and it's something you can do on the computer. When i was about 14, i started my own etsy.com "business." It's like an online flea market, where you create your own products and sell them to others. I've bought many jewelry items from etsy.com, for example. Sorry if this isn't what you were interested in! Good luck!