Sayyiduna Ibn Mas'ud (may Allah be pleased with him) said: "Every good deed is charity, and in the time of the Messenger of Allah (peace and blessings be upon him) we used to count al-ma'un as lending the bucket, the cooking pot and things like that."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8981