But what do you do when you have sunscreen on your burger and mayo on your back? I think this might backfire.

Well now you only have a year under 102(b)... This counts as public disclosure.

Although, more seriously, I doubt it would be accepted. In order to be patented, the idea must be novel, useful, and not obvious. It meets the requirements for useful, but not-obvious and novel may be harder to establish. (Depending on any patents for single-serving condiment packaging, they may be phrased in general enough terms to be considered prior art)

Already done: http://cotradeco.com/products/560-sunx-sunscreen-single-use-...

I'm 100% certain that I'd find a way to make one of these explode when I sat down, covering my wallet, money and ID in a sticky mess.

Which would make it pretty tough to get into bars.

That idea's been done, but if you could develop a packet of goo that could be used as both ketchup and sunscreen, then you'd have something. You could put half on your burger, and the other half on your face. Huge time saver.

Awesome idea. Even more awesome that it already exists. Ordering some right now...

I don't think you can patent this...my school gives these out at any outdoor event. My friends and I usually collect a bunch and I keep them around -- in my purse, in my car, etc.

Individually wrapped sunscreen wipes are already in most pharmacies.

I actually carry sunscreen with me at all times. I use it maybe once a year, and I can't predict when.