35x4mm pegs.  Neighbor needed some for a homemade board her father had made years ago (they were using round toothpicks) but didn't want the Blue/Green/Red. She opted for Black/Grey/White. She also asked for them to be a bit taller (old hands) so I remixed them 35mm by 4mm.  I printed at 5 walls (100% infill) for strength, they are strong.  I printed 2 sets of 3 each for lost pegs during use and tally of games won.