You can generally rely on the Christmas season to get people to visit your shop for either supplies or presents; but that doesn’t guarantee increased sales. One thing you can do, though, is to give out vouchers or coupons to customers: they’re more likely to buy more things from you when you give them a good deal first.
Not sure what your vouchers should look like? Use this gift certificate template from Canva. It has a red background with an illustrated snowman. Just add the promo details to customize the deal and change colors to match your brand.