I built a Figma to Bubble.io converter, basically Figma to code but for a nocode platform. Niche, but something that I personally needed so figured others may find value as well. I charge a flat $25/mo, and based on the Figma design it significantly speeds up my development in bubble. Been hovering around $1.4K MRR, only real spend is ~$15/day google ads which has yet to pay for itself, but I keep telling myself its a good excuse to learn google ads. https://www.deezign.io .