In Islam, there is no such thing as small deed or great deed. Allah rewards for each good deed ten fold to seven hundred folds, depending on the intention. Allah loves the small deeds that are done constantly, as the prophet (pbuh) said:
'the best deeds are the good deeds that are done consistently even if small.'
He (pbuh) also said:
'Allah is pleased with His slave when he eats his food and thanks him for this and when he drinks his drink and thanks Him for it.'
So as Muslims, we shouldn't belittle any of our good deeds. Always be in a condition where you are doing something good, no matter how trivial. In fact, all good deeds are great deeds, because you do them for the sake of Allah. The Prophet (pbuh) said:
'Do not belittle any act of kindness even if it is only meeting your brother with a cheerful face.'