[PiggieMom]

Chew toys aren't a good idea as most of them are dyed and they're completely unnecessary (as long as the pigs have unlimited grass hay they're teeth should wear down fine).

My pigs like anything they can run through: tunnels made out of bent grids covered in fleece, cardboard boxes with lots of holes, scraps of fleece strung across the cage, corner tents made of fleece, ect. I also have a wind chime made of metal that they cannot chew apart that's hung just high enough in their cage that they can ring it. The noise excites some pigs and scares others though.