I agree with LitPrints... Typically, when people start to mix things, they REALLY mix them. They'll have a vintage tea cup next to a hand knit scarf next to a picture they took of a tulip. Despite the fact that you have many different categories of items, they are all very consistent, and someone who clicks on one of your listings would definitely be interested in the others (which is probably the best "should I open another shop" test).