We’re big supporters of the spring scarf as a way of moth-balling your winter coat a few weeks early, but if you’re really committed, you may need a different kind of scarf.
Symmetry had the clever idea of adding a little hardware. A small chain and fastener convert their tartaned wrap into a makeshift cowl, which should be every bit as warm as a spring coat. It’s a little medieval, but if you’ve got a waxed cotton coat handy, it should fit right in, and if the weather shifts, you’ll be able to de-cowl and slip the whole thing into your bag without any more trouble than the standard wrap around. Sadly, they're not geared up for retail just yet...but maybe by the fall?