Smiling in the face of your brother is charity" (Tirmidhi). A smile not only uplifts others but is a simple act of kindness.
Prophet Muhammad (ﷺ) said, "When one of you eats, let him mention the name of Allah" (Abu Dawood). Saying Bismillah (In the name of Allah) before meals increases the blessings in the food.
The Prophet (ﷺ) instructed, "Eat with your right hand, and drink with your right hand" (Sahih Muslim). Using the right hand for eating is a simple but significant Sunnah.
The Prophet (ﷺ) would usually sit while eating and drinking. It helps in better digestion and shows humility.
When waking up, the Prophet (ﷺ) would say: "Alhamdulillah alladhi ahyana ba'da ma amatana wa ilayhi an-nushoor" (All praise is for Allah who gave us life after causing us to die, and to Him is the resurrection) (Bukhari).
The Prophet (ﷺ) would sleep with his head covered. This is a simple Sunnah for good sleep hygiene and protection.
The Prophet (ﷺ) would recite these three surahs, blow into his hands, and rub them over his body before sleeping (Bukhari).
The Prophet (ﷺ) said, "Do not drink water in one gulp like a camel, but drink it in two or three sips" (Tirmidhi). This is a simple Sunnah that is good for digestion.
The Prophet (ﷺ) said: "Spread the greeting of peace (Salam) among yourselves" (Sahih Muslim). Saying Assalamu Alaikum spreads peace and blessings
When the Prophet (ﷺ) performed prayer, he would sit between the two prostrations (sujood) and say: "Rabbighfir li, warhamni, wahdini, warzuqni" (My Lord, forgive me, have mercy on me, guide me, and provide for me) (Tirmidhi).