Here is a list of art tools I use in my videos. These are Amazon Affiliate links which will help support my videos if you purchase through them.
This is what I use to flock things. It is actually a static grass applicator for making model rail roads. I use Donjer Suede flocking fiber. They have a ton of colors if you check the link. Make sure to wear a mask if you do this because the fibers fly in the air and it will make a mess.
This is the tool I use to make the stressful stress balls. I found mine at Target for $20 but they do have it on Amazon as well.
These are the giant water beads a flocked in a few videos. They are pretty cool but take about two full days of soaking to get to full size.
Here are two types of mold putty for making easy molds of almost anything. You mix equal amounts of each color of putty and then put it on your object. It sets in about twenty minutes and then you can cast it in resin or chocolate or whatever you like. They are not skin safe though.