First, with the caveat of obviously not knowing you or your job, it's my experience that it's rarely the case that an area as broad as "writing internal web app

First, with the caveat of obviously not knowing you or your job, it's my experience that it's rarely the case that an area as broad as "writing internal web applications" is actually inherently boring to a person. The parable of the stonecutters come to mind, are you cutting stone or are you building a cathedral? Find out what energises you. Think back, what were good days and what did you do? Try to do more of that, try to make the work you do more like that kind of work. Of course, there are plenty of jobs that aren't remotely in the cathedral building business, and if that's the case, start networking. Get on Meetup and attend some meetings or hackathons or startup weekends or whatever. Your skills are generally in demand, so focus on getting inspiration for what might interest you, or meeting people that you think you'd enjoy working with, and let that guide your job search. And don't let internal webapps scare you. Building a "boring" app for a team that does good things with it and appreciates your work can be very satisfying.