Abstract: A device for identifying a campsite or a vehicle comprising a pole, a plurality of light emitting diodes (LEDs) disposed around the pole forming multiple arrays located one below the other, a power supply means, and a control means for producing various light patterns by selectively controlling power supply to the LEDs. The device also includes switches to select the light pattern.

Abstract: The present invention relates to a pocket knife having a rotation type can opener for opening a can. The rotation type can opener has a crank, a shaft, a gear and a cutting blade; the upper rim of the can is put to be infixed between the cutting blade and the gear, with the top end of the can holding the cutting blade; the crank is rotated to drive the rotation of the shaft, the rotated shaft further drives the rotation of the gear, and the rotated gear engages the upper rim of the can and drives the rotation of the can; the top end of the rotated can produces a pressure against the cutting blade so that the cutting blade first penetrates and then rotationally cuts apart the top end of the can.