Making object "Blink"

Hello,

I have a coin object that disappears after several seconds of $$anonymous$$tting a ground. What I was t$$anonymous$$nking of doing was making it slowing "blink," eventually blinking rapidly then disappearing.

Now, by "blink," I mean making it disappear for 0.2f seconds then making it appear again. I am planning on implementing t$$anonymous$$s via Coroutine, but I was wondering if it is not too costly to make a coin disappear by doing (renderer.enabled = false) then doing (renderer.enabled = true) t$$anonymous$$s often in a short span of time. There could be up to 10~20 coins in the scene at the same time, all blinking at its own rate.

I feel like since t$$anonymous$$s is not the most unique way of indicating that somet$$anonymous$$ng is about to disappear in games, there must be some standard way of doing t$$anonymous$$s.

So yeah - is t$$anonymous$$s the most efficient way of doing t$$anonymous$$s?