Easter is over and it gave me an idea

I was thinking that the yellow egg from a Kinder Surprise can be used as an anal toy. Put a marble or ball bearing inside the egg (something heavy that can roll around). Put the egg inside a condom and put it up your butt.

The toy should be like a ben wa ball.

I haven't tried it as I don't have a marble.

What do you guys think of this idea?

It might work good, but watch out cuz I believe it's a bit fragile, as it's thin plastic. Other idea is to drill small hole on the top of it, and to use silicone or hot glue to fill it up and make egg shape, but from silicone or other soft material. Later on just put condom on it and you will have soft and safe to take out anal toy!