Mineral Blocks

1 pound plaster of Paris

1/2 cup oyster shell

1/2 tsp Kelp (find at a health food store)

1 tbsp salt

1 cup water

Mix this fast and have containers ready, small plastic bowls or ice cube trays work well.
If you want to bolt them or twist tie them to the cage make sure you push the bolt or
 tie in while mix is wet.

Calcium Blocks

2 parts Plaster of Paris

4 parts bone meal

5 parts powdered garden lime

1 part mineral supplement

Mix with water until smooth. Mold into plastic cup or similar container of desired size.
Insert u-shaped tie wire with ends sticking out 2”-3”.
Allow to harden for 2-3 days. Fasten onto cage wire near perch