When summer rolls around, I always find myself wishing I had a handy cooler to keep my drinks cold during picnics and backyard BBQs. Last year, I decided to take on a project and make one myself. It wasn't as hard as I thought it would be, and the result was a sturdy, custom cooler that I was proud of. I learned a lot in the process, including how to choose the right materials and tools for the job. Making my own cooler also allowed me to personalize it. I painted it in my favorite colors…