If you have an eBay seller's account or a flea market booth, you may want to sell craft supplies. This covers a wide variety of supplies from ribbons to papers to wedding flowers. Of course, to remain focused you might want to hone in on one segment of crafting. In that case, you'll want to find out what the current, popular crafts are so you can offer things that appeal to that crafting audience.
You will need to find a reliable supplier where you can get craft supplies at a low enough cost to be able to mark them up and have a little profit. Your mark up will need to cover not only the basic cost of the craft supplies, but also any shipping, fees, and overhead, plus the profit margin that is yours to keep.
You might also need to consider either bags or packaging if selling locally, or shipping supplies if selling online at auction sites. Shipping supplies costs can be covered in what you charge to ship the items to your customers.
If you are selling from your home in some way (not necessarily that customers stop by), then you may also need storage space unless you hook up with a company that offers drop-shipping.