They do stand on their own and are made of PVC plastic. When I had the mold made I had it shipped to me just so I could confirm that I did in fact stand on its own before I had a few hundred made. The picture without the ruler is of them standing. 24 would be $52.80 ($2.20 each); 48 for $91.20 ($1.90 each). I have them listed in the for sale forum. If anyone is interested in 48 please let me know by NOv 9 as I am having another batch ran. I will post different angles photos in a few minutes.
Thanks!