On screen timer?

is there a on screen timer for Linux/Gnome?
Like a on screen egg timer?
I am curious as I am trying to help my hubby create youtube videos where he will use the desktop recording software for tutorials on how to use some linux software.
He likes the idea because he knows how helpless he was when he first started linux

1 of about 1,750,000 hits from “linux on screen timer” at google:



most of of them seem to be payware though, or windows only.
Why do you think I dont do google searches for software?

If kde Tea Cooker KDE-Look.org pretty sure it has a custom, if gnome not sure.