This funny sugar skull tracing page has a rather large grin, which makes it look a lot less scary than an ordinary skeleton I think. The flower on his forehead helps too. It's great pencil control practice to trace over the lines...
Trace over the dotted lines to make a pretty marigold - or just a generic flower - read to be coloured in. Marigolds are used for decoration in Mexico's Day of the Dead festival.
This lovely, decorated owl face was originally designed for Day of the Dead, but I think the kids would enjoy tracing over the dotted lines and colouring in some of the details at any time of year.