Letter décor of all kinds is popular and you can easily make your own, fashioned from cardboard and some summery flowers. Start by drawing the letters on corrugated cardboard and then cut them out. Then, glue strips of the cardboard along the edges of the letter to form a box shape. Spray the letters in any color you want. Cut some floral foam to fit into the box and then press in an array of artificial flowers to fill the interior of the letters. Voila! Bright and sunny letter décor to liven up any room.