Create the number twelve ('12') with a bold outline. The design consists of the '1' and '2'. Inside the '2', which is a curved shape, place up to 5 small, proportional toy images, such as small trains, blocks, or stuffed animals. Important: Ensure that the number '12' and all toy images inside the '2' 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 curved parts of the '2', with no lines or divisions inside.