I'm supposed to be working on sight reading right now for piano. My teacher has loaned me one of her books (actually from when she was a child) of really easy hymns to sight read through. They're about a grade 2/3 level. There's very few of them I don't know, so that even makes it easier to sight read. So... I've upped the bar a little. I either have to sight read them with the metronome (which means I don't fudge the timing) or I have to sight read them and transpose them up or down a step or two.
Can I do it yet? Not well. We're working on it. It'll come.