Ancient languages

Below are examples of 50 different written languages. Unless you're Indiana Jones, I doubt you'll recognize more than a handful. However, of these 50 scripts, five of them are contrived 20th Century creations. Two of them are shorthand-style phonetic alphabets designed for English; one of them is an ideographic writing

Aramaic (ארמית, Arāmît): The Aramaic alphabet was adaptaed from the Phoenician alphabet during the 8th century BC and was used to write the Aramaic language until about 600 AD. The Aramaic alphabet was adapted to write quite a few other languages, and developed into a number of new alphabets, including the Hebrew square script and cursive script, Nabataean, Syriac, Palmyrenean, Mandaic, Sogdian, Mongolian and probably the Old Turkic script. (...)

Greek Alphabet - maybe have the kids write out their names in greek?

Celestial

Enya- fictional language based on elvish language from lotr and Gaelic languages

Runes