Consider functional objects like tools and machines. The things that are so well-made you barely notice you are using them.
Spaces, public and private, can be well made. Parts of a city or town. Workspaces. Closets.
Think about pieces of music, art or entertainment. What is it about the way they have been made that had an effect on you?
Give your work a title. Illustrate it if you like. Write your initials and the date on it.