Is it just me or does anyone else get bored of their current routine and need some new excitement in their life?

Although I'm the sub in our relationship my partner was not into the BDSM scene before he met me. So it's taken a bit of "Training" on both parts. He's settled into the role quite well but if I want him to try something new he seldom does it of his own accord and it requires me to drop a subtle hint or two. The problem is I've run out of ideas myself. We've done the usual oral, anal scenarios, we have even experimented with enemas to a degree, butt plugs dildos and nipple clamps are part of our regular play. I enjoy a good spanking with a riding crop or my masters bare hand but where do we take it from here?

Help! any ideas welcome.