Amazon sells small pelican cases with cut-to-fit foam. They're water-tight, you can lock them, and they're really solid. Biggest downside is they're a tad on the bulky side, but if you're like me and plan to pretty much just keep the case in your car it's the perfect option.
https://www.amazon.com/Pelican-1150-000-110-Small-Camera-Black/dp/B000N9PQEI