Having your own site to sell gently used handbags is probably going to be a really, really difficult endeavor for what its worth. It will be hard to get enough eyeballs/visitors on those bags to generate enough sales to make you any meaningful income (it’s an incredibly small niche and almost too specific in nature). Not to deter you from the idea completely but you’ll need to commit to several years of patience to really hit a home run in that field.
Build up a following on your Instagram account and you could quickly be making extra money online. Major brands, gear companies, and even startups are willing to shell out $500-$5,000+ per post to get in front of your audience. While it’s getting harder and harder to build a massive Instagram audience, if you already have a solid niche and are posting quality content regularly with a great camera for taking Instagram photos, with a few small tweaks you can make yourself an influencer. Check out this awesome article from Shopify on how to build and grow your Instagram following to get started.
Turn your photographs into cash via sites like Fine Art America, which lets you upload your images to sell as prints, t-shirts, phone cases and more. Other marketplaces for photographers include SmugMug, 500px and PhotoShelter. Some sites require a subscription but may provide features ranging from cloud storage to password-protected galleries and a customized website.