This one is the yellow one

Hoppe's 9 - Rifle til Shotgun adapter

Smart bucket with pouring spout with 1500 pcs Steel balls for air pistols and air rifles without rifling

Stabilotherm has made this wooden cup which has been featured often on the danish DR's Nak & Æd (kill and eat)Tv-Program

FireField Laserpatron, Cal 12 025-kugler This one is the yellowFirefield has created an affordable brass cartridge with a laser for insertion. You simply put the laser cartridge in your 12 gauge shotgun and then you can aim and see where the gun is aiming! This means you can dry fire at home and use it for shooting the gun with, for example, a red dot sight on it. It works up to about 100 meters. The battery lasts for about 1 hour