We used to have access to these neat 8" disks/ovals that were left over when they cut out the hole in commerical counter tops for sinks or garbage bags from a factory.
That source has dried up.
I tried buying some bulk plastic plates from Amazon:
https://www.amazon.com/gp/product/B07B2PN5M3
But these were just a bit too flimsy and not rigid enough so they did not shatter on impact.
Would be nice to find some bulk plastic plates that would shatter on impact. Remember those plates you used to get with your dog food?
Would be nice to find a local bottler for 2 liter bottles but storage would become a problem.
I experimented with plaster of paris poured into styrofoam plates. Worked OK but labor intensive.
Right now 6" tiles are our go-to.
Any ideas?
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