A selection of the Mi Yodeya series is being prepared for the hagadah mi yodeya
14 are the books of the Rambam.
15 were the cubits of the Flood.
16 are the maneh of the myrrh.
17 were the Yovel cycles.
18 are the years before marriage.
19 are the years of the calendar.
20 is the age of the Draft.
21 are the days between the straits.
22 are the lines in a mezuzah.
23 are the judges of a small high court.
24 are the divisions of the kohanim.
25 are the letters of Sh'ma.
26 is the gematriya of the Tetragrammaton.
27 are the letters (including final forms).
28 are the "time"s in Koheles.
29 is the height of the red line.
30 is the age of strength.
The only problem is that this list is in English and I customarily recite the first thirteen in the language as they are found in my regular Hagadah. (Some Hebrew-Aramaic hybrid.)