TXT records are actually variably-sized arrays of strings, making them very suitable for ASCII art. Unfortunately, `dig +short TXT` displays them as

    "string1" "string2" "string3"

instead of on separate lines. However, this is easily remedied with sed.

Using TXT for artwork also has the advantage that you don't risk an intermediate resolver re-ordering things.

Source: When this came up about a month ago: https://news.ycombinator.com/item?id=7185326