One of the best things about warm weather is flip flops. This LaForce Likes is this simple sign. I think it would be easy enough to DIY in your color of choice or you can buy it off etsy. They used a nice birch but other woods could work just fine. I can see this as seasonal decor or something you have up all year to remind you of that wonderful feeling of flip flops on your feet.
Life really IS better in flip flops! Hubby will attest to this as he wears them pretty much all year long... must not be as affected by cold wearing them far into chillier weather.