toutou, amou kè, doudoun (for girls), papouch (boys), nounoun (girls), ti chouchou, ti cheri, ti kòkòt (girls), ti mamoun (girls), ti fifi (girls).
Also, depending on the child's proper name:
ti jo - for Joseph
jojo - for Joanne
toto - Antonine, Anthony, Antoinette, thomas
tètè - for Esther
didi - for Lydia
dada - for Daniel
dadou, dani, dàn - for André, Daniella
ti jak - for Jacques
sousoul - for Ursule
kikin - for Jacqueline
sonson - for Jackson
dodo, doun, doudoun - for Dominque
nènè - Fritzner
mitch, miki - for Michel, Michaëlle, Michaël
fanfan - Frantz
michou - for Michelle, Michel, Micheline
ti mak - Marc
ansy - Hans
etc....