The last time I was at the pistol range, I picked up two huge 40mm ammo cans for storage in the blazer. Since I run topless at least half of the year, I would love to find some way to lock the lids. Not that I keep anything of tremendous value inside (tools, jumper cables, etc...), but I don't want mischievous teenagers rummaging through them either. Anybody have an idea that won't look totally ghetto??