Get a qt of epoxy, Kirker sells qts and I believe SPI does as well.
https://www.autobodytoolmart.com/kir...r-p-12620.aspx
Go to the pharmacy and ask if they will sell you plastic dosage cups. I bought a sleeve of 100 for 10 bucks, they are about the size of the clear plastic lid on a bottle of Vicks Nyquil.
Mine had fluid oz marks along the side so can mix the epoxy in the correct mixture, or you can buy some cheap Stainless Steel mixing spoons.