Addon request: Paladin seal reminer

[snoopdobi]

Hey people,

I have one paladin char and sometimes I'm forgetting my seals and engaging to combat without one of them, is it possible to make one addon to just check all seals on me and if I dont have any make one sound effect or screen flash effect?, is there any addon which can make this already or is it possible to make simple one?

Thanks in advance