W.P.
Dear M.:
You don't have to part, just toss it in a big box and put it into the garage. A box (or a few stacked boxes) looks good, spread out clutter does not. Plus, you can easily get the main toys back after visists.
It should look clean and nice to anyone, including people without kids. They need to feel home, if they want to buy. Leave as little as necessary in plain view.
Regards,
W.