At first i thought that you might use the skewers for nipple play or torture, but using them for sensory games makes it sound more fun.The tubes first, a surprising number of gals are kinda obsessed about seeing what things will fit which sometimes leads to odd or embarrassing situations when the wrong things are inserted and won't come out again. The tubes all have a rim to prevent them slipping fully inside. Another use is for when there is dispute about just how big the orifice is, the graduated tubes tell you exactly. Just for reference a normal soda can is around 65mm in diameter.
Skewers have all kinds of uses, these are not needle sharp points so can be used for sensory games. Poking, prodding, scrapping along the skin and so on. They also look menacing, good for setting certain moods.
And the tubes, seems also interesting the way you explain. Wonder what else is inside

