Buying gifts can be tricky. Not only do you want to choose something the person will like, but you need to make sure it’s appropriate for the recipient and the occasion. Different people and celebrations will require different gifts, and it’s hard to know sometimes what is and isn’t OK. Should you include a gift receipt? How much should you spend on a wedding gift? Is it ever OK to not give a gift at all? Find out the answers to these questions and more gift-giving etiquette rules before wrapping your next present.