Where to buy a pinch toy?

My boy loves to pinch the pimple on my face. Its a bad habit. Other babies cling on to their bolsters, suck their pacifiers or bite the edge of a pillow or blanket but he........ pinches the pimple on my chin. No other pimple will do. Its got to be that very same pimple on the right side of my chin. No, not even the left side. Only the same pimple on the right side will do.

Sometimes, I grow tired and let him. (The pinching increases in intencity when he is sleepy, tired or stressed. Strangely, the act of pinching my pimple soothes him.) Sometimes I slap his hand away and say "Stop pinching, its painful." Usually he will say "Nice!" and carry on pinching but the other day he suddenly looked at me and asked "Mummy, can you buy me a pinch toy?" Hahaha.

So... does anyone know where I can buy a pinch toy?