We sit in front of our TV or in front of our phones and we say nothing. We have wasted valuable time which we could have used to gain rewards. Imagine sitting silently on your phone or watching tv are your last moments of your life. This is an easy dhikr that we can say while performing our usual daily tasks.
SubhanAllah or SubhanAllah wa bihamdihi (“I praise Allah (or All praise if to Allah) above all attributes that do not suit His Majesty.”)
Reward: A tree will be planted for you in Paradise. Nice! Start growing your own forest right now! Another hadith relates that whoever says this 100 times a day, his/her sins will be forgiven even if they were as much as the foam of the sea [Bukhari].