Sex toys aren't everyone's cup of tea, so if they're not your thing, that's fine. It sounds like you have some idea of some other things to try though, so that's a good place to start: as Sam said, it's very common to go through periods when our interest in things that used to turn us on just isn't as high, and some novelty is often a way to manage that.
I will also say that if you're finding that your sex drive just isn't as high, period, that's also very common. It can be frustrating, but pretty much everyone will find that over the course of their life, their interest in sex varies at least a bit, and there's nothing wrong with that. It doesn't mean it will be like that permanently, but sometimes you do just have to wait and be patient with yourself.
"Where there is power, there is resistance." -Michel Foucault