Here are some common objects that weigh approximately 40 grams:
A standard egg – Most medium-sized chicken eggs weigh about 40-50 grams.
A slice of bread – Depending on thickness, an average slice of bread weighs around 35-40 grams.
A small apple – Smaller apples usually weigh around 40 grams.
A stack of 8-10 U.S. quarters – Each quarter weighs 5.67 grams, so a stack of about 8 can total close to 40 grams.
A bar of soap – Travel-sized or small bars of soap often weigh around 40 grams.