GREENVILLE (WLUK) -- Airport security is hoping a recent "edgy" discovery will remind passengers about packing rules.

The Transportation Security Association's Instagram page had a collection of weapons discovered at airports around the country recently. Appleton International Airport was featured in the number one spot.

That's because it wasn't just one problematic piece of luggage; it was three. The photo shows a knife, an oversized letter opener and a toy gun.

These items are allowed on planes but not in carry on bags. TSA says, "It's always a sharp idea to place items like these in a checked bag."

Click here to learn more about what's allowed on flights and how the items need to be packed.