What walks down stairs, alone or in pairs?

It's Slinky! It's Slinky!
You really need to watch the classic commercial to appreciate this wonderful toy: https://www.youtube.com/watch?v=CM_sMM_tvX8
Since I went to the Toys exhibit alone, I didn't have the fun of racing my Slinky against a friend's, but It was fun to see I still had the skill!

[Margo]

Clever!!

[Kerri]

Awesome shot

[Pat Knowles]

Still a great toy even after all this time!

[Myrna O'Hara]

these aren't cheap to buy, at least the old larger metal kind.

[Allison Williams]

@sailingmusic Actually you can still buy them for about $4.