My cat does not each much at a time, so I refrigerate half a packet in the morning for later afternoon chomping. To then warm the packet back up, I use warm water, but this was a pain to do in a bowl as you'd need to keep the packet from falling and taking in water, and the heat would not transfer well.
This design holds a cat food pouch, and allowed warm water to by slowly streamed into a funnel on the side. The water will then cycle slowly around the packet to warm it, before draining through a couple of small holes at the front.
The design features:
I printed this in PETG for a little extra resistance against warping when filled with hot water.
The author marked this model as their own original creation.