Create the number sixteen ('16') using a bold outline. The number consists of the '1' and '6'. Inside the '6', which has a rounded bottom and a circular top, place up to 5 small, proportional toy images such as small trains, balls, or stuffed animals. Important: Ensure that the number '16' and all toy images inside the '6' have no internal color whatsoever—only black outlines. There should be no shading, filling, or any color other than the outlines. The '1' can be left plain or with minimal detail. Ensure all elements stay within the circular and rounded parts of the '6', with no lines or divisions inside.