Any other ideas of stuff I can make with things around the house?

Any ideas of stuff I can use with a sharpie. What would I color on, or what pictures or designs are good ideas?

What are ideas for the pigs. They are little ceramic Piggy Banks that are plain. I've had ideas of adding hats to one and making it look like it's gardening. A nerdy one and writing College fund on the side of it. A few Easter ones. Any other unique ideas? Do, you think if I tried to sell them, any one would buy them? How much?

Just looking for ideas!!