I'm coming into a similar situation as you. I've done done trending ecom products & it was so unpredictable but mostly fails. I'm now looking into selling digital products as a monthly subscription. If you make it cheap enough, many customers may just not bother even canceling the monthly subscriptions. Also, the digital assets will never run out of stock & you'll be able to sell them as much & as many places you can find. On top of that you can also upsell of membership tiers. This will help in having a more consistent paycheck for you. If you want more consistency & peace of mind with your business, I think this is the way to go. I'm looking into maybe monthly graphical templates for social media content but right now I'm open to any suggestions that the great people of BHW have. Best of luck to you!