Online, in catalogs and in stores, I've been noticing the variety of Catalyst Art Tools for sale. Some of the tools can be pricey. So I decided to experiment and make my own.
I cut Adhesive Foam Sheets to the size that I needed, i.e., two complementary sizes for each tool. Make sure that your adhesive side faces the inside of the tool. I used a new pencil for one tool and a chopstick for the other. Press the two foam pieces together very firmly.
I played with the tools and liked the marks that they made on paper with heavy body acrylic paint. I'll probably use the tools for painting flower petals and abstract paintings. I wiped the foam tops clean with a wet paper towel.
These handmade tools are not as sturdy as the Catalyst Silicone products but they served my purpose. I may make some wedges next.