My in-laws had an anniversary, and the kids love making gifts for them. I love this idea for an anniversary. This would also make an adorable Valentine's gift from you and your kids to your spouse!
First, I went to the craft store and purchased some white air dry clay. I already had brown paint at home.
I rolled out the clay and formed it into the shape of a cup. Then I let the girls drag lines along the sides with toothpicks so that it would look like tree bark. They also painted in brown. Then I let my 12 year old draw the heart and initials with a toothpick. He also painted them blue.
Simple, inexpensive, and meaningful!