My kids once bought some in a toy shop. 
They took it into our garden, forgot it on the table, it melted in the sun and droplets fell down on my jacket. There it dried and now I've got engraved slime on my jacket, with glitter ofc: 
 https://image.nostr.build/1ed197aaccb5e9e0b0e7fe6995be3f0d966ce4317a9657bc58143be15257c6b4.jpg