Do you know of someone that is having a 40th wedding anniversary? It can be difficult to come up with wedding gift ideas on a budget. However, there are some very affordable 40th wedding anniversary gift ideas that you can use. One idea is to send the couple a living plant that they can keep indoors. Another is to give them a gift basket with their favorite espressos and wafers. Perhaps they would enjoy a movie rental gift card to watch movies together? These are a few 40th wedding anniversary gift ideas to get you started.