Wedding photographers command premium rates. After all, you are capturing one of a couple's most important life moments, making it a very lucrative side business idea. Many professional wedding photographers charge between $2,500 - $10,000 (or more) to shoot a wedding, so it's realistic that this side business idea could quickly blossom into becoming a full-time endeavor with the right happy clientele base that's willing to refer you to their friends and family. Check out the Complete Wedding Photography Experience over on CreativeLive to get up to speed on everything you need to launch a successful wedding photography business.
I’ve had other acquaintances buy the rights to unpopular songs or jingles and collect on royalties, others who buy Youtube channels or Instagram accounts, and still others who buy Amazon businesses. The list of existing assets you can buy are practically endless, and if you have one or two ideas for improving an asset, you could have a winner on your hands.
Please note that some of the links below are affiliate links and at no additional cost to you, I will earn a commission. Know that I only recommend tools and learning resources I've personally used and believe are genuinely helpful, not because of the small commissions I make if you decide to purchase them. Most of all, I would never advocate for buying something that you can't afford or that you're not yet ready to implement.
I created an “Every Day I’m Hustling” shirt and sold enough for the campaign to ship, but didn’t earn much on the experiment because of some not-very-effective Facebook advertising. Still, some opportunity here and a friend of mine is doing REALLY well with this. If you can create awesome designs and reach the right people with good Facebook targeting, Teespring can be very profitable.