Ask HN: What do you do when you get bored from a “successful” side project?

I'm currently working on a (hobby-)side project that I started last March; It's already functional (since several versions back actually) and even deployed to our company's server where some of my colleagues are using it, since it solves some real world problems. (The legal part is all sorted out, no worries about that part.)

The product is 95% finished (some logging and error handling to do), and thought about turning it into a SaaS product, just to see how it would fare.

The problem is that I got bored. What's supposed to be done in a day, still unfinished a week later. Not because of some nasty bugs, or technical problems. It's just that I no longer that excited.

In such circumstances, what do you do?