This paper from the
Annals of Improbable Research explores the stacking of baby rings (or toroids) conducted by 2 adult age researchers and one 9 month old researcher (t = 0.9167 yr).

E. Robert Schulman , C. Virginia Cox , and E. Anne Schulman.
How to Write a Scientific Research Report. Annals of Improbable Research, Vol. 5, No. 6, pg. 9.
Abstract:
The stacking properties of toroids that reflect radiation in
the 1.8 to 2.8 eV energy range is investigated. Preliminary
results indicate that in the optimal configuration the toroids
are oriented vertically with those reflecting lower energy
photons having larger gravitational potential energies for
toroids of equal mass. The ambiguousness of this solution is
tested by experiments performed by a relatively inexperienced
researcher (t= 0.9167 yr). These experiments indicate that
alternate solutions can be found.
This study is bound to a timeless classic...