I like spiders, so do not wish the spider dead, though many others do. Treat your hand as if it were a spider and move it according to the words.
There’s a spider on the floor, on the floor.
There’s a spider on the floor, on the floor.
There’s a spider on the floor and it wasn’t there before.
There’s a spider on the floor, on the floor.
Continue in the same way with the following:
There’s a spider on my leg and it’s really, really big.
There’s a spider on my tummy and it’s making me feel funny.
There’s a spider on my neck, making me a nervous wreck.
There’s a spider on my head and I don’t wish it were dead.
Now knock the imaginary spider back onto the floor and repeat verse 1.