Well I did two different heads for my kids this weekend.
1. was a plastic field point for a 1/4" arrow made from old plastic arrowhead inserts they fit great and were less than 1.00 a bag.Ground a point on them with the Dremel sanding disk.
2. was a blunt for a 1/4" arrow using a slip on pencil eraser (the arrow head shaped ones)It fit great and goes over the field points( the plastic one I made they weigh less than metal ones) easy.Great for indoors and stumps.Makes my kids feel like real hunters.