https://www.ebay.com/p/60mm-Big-Cle...ing-Decor/19002635723?iid=273609009525&chn=ps These are much better for Blast media V/r HT1
you can buy glass blobs in pet stores and in home decor stores, But the Dollar store will be the Cheapest, you can get Fake oversized glass gems off of Ebay V/r HT1