1. Get a plain brown paper lunch bag.
2. Fill with food.
3. Gently twist close and offer to your cat.
Foraging toys do not need to be fancy. They simply need to vary to continually peak your cat's interest and be appropriate for their skill level. Remember that foraging is not just a feeding protocol but also mental stimulation for your cat.
The goal with this toy is for the cat to either shred the bag with their claws and teeth or to open it and use their paw to extract the food.