Trundle

The Trundle is a low bed, often on wheels, that is stored under an ordinary bed ready for use by visitors.

Scribblenauts
In Scribblenauts this object can be used as a trampoline, making you jump higher.

Super Scribblenauts
In Super Scribblenauts the bounciness was removed, so this object became useless. It was also changed from the tool category to the furniture category.

Scribblenauts Unlimited
In Scribblenauts Unlimited you can ride this object. When riding it you will lay down, as if you were sleeping.