Personally, as I don't cycle for speed, a multi-sport helmet (which is also rated for biking) works for me.
First bike helmet I've owned that doesn't make me feel like a mushroom (up until this one, I've never owned a helmet that hasn't looked/felt like it's been perching on top of my head--and yes, my helmets have been correctly fitted). This one actually feels like my head is IN it (and I feel like more of my head is covered).
Perhaps that's more similar to the look you're thinking of, without the weight of an actual motorcycle helmet?