Monster eye slime
Pop the lid off of this tub and take a peek inside something might just peek back at you inside is a glob of colourful putty that has a squishy monster eye poking out of it empty it into your hands to feel the slime slowly ooze between your fingers or take the eye in your digits and give it a proper squeeze getting it all back in the tub is another game entirely and might lead to one or two silly noises