Great option for pigs who are new to puzzle toys because it's fairly simple and straightforward. I love balls like these because they encourage physical exercise in addition to mental!
Treat Balls
I have the oxbow version of this and my pigs love it!
Puzzle Feeder
My piggies love this! It's also the easiest one to clean in my opinion.
UFO Food Puzzle
This is one of many tons of cute snuffle mats! I'd buy them all if I could!