Everything can get boring after a while, I live at a lake with some great views, but after about 100 photos of the lake it got boring for me, in fact I am on a theme of avoiding photos of water now.

In the suburbs a transport theme comes to mind, cars, bikes, buses, trains, even shoes come to mind.

What about the number on your house, the door knob, a low shot of the grass, your reflection in a window, sunrise or sunset as viewed from your garden?

Good luck.