For added fun, two tubes of roughly that size that air seal fit one inside the other makes for a slide didgeribone. addendum: https://www.youtube.com/watch?v=A

For added fun, two tubes of roughly that size that air seal fit one inside the other makes for a slide didgeribone. addendum: https://www.youtube.com/watch?v=A1d7Eztj7Eg https://www.youtube.com/watch?v=A1d7Eztj7Eg