Stick to it! Sucky Bag

Things like this seem like a no brainier, simple yet unbelievably useful. From sailing to kayaking to surfing to snowboarding, any water sports, the list keeps going. The Sucky Bag has a QuickSilver logo but it's not on their site.
Here are some of the features:

• Lever-operated suction cups - attach and detach in seconds.
• 100% water tight inner compartment.
• Floats if dropped in water.
• Works on all flat airtight surfaces, makes it possible to carry your belongings in ways you’ve never done before.
• Silicone based rubber cups for all weather conditions.
• Inside compartment is lined with foam fabric for added protection.
• Neoprene bottom protects your board from being scratched.

Use it to for your money, mobile phone, snacks or anything you can shove in it. You can even use it on travel since the suction will stick to any flat surface. Hang it on your bathroom mirror as a functional toiletry bag or inside your school locker.
Check it out! Sucky Bag