parent gifts

i am totally at a lost for what to get them considering they are very unbalanced in how much they are helping us...

my mom/stepfather are paying for RH and catering, and my dress
FMIL is taking care of RD
FFIL nada so far
my dad/stepmom offered to make a card box

?????
FH wants to give my mom/stepdad a new plasma tv for everything, then what about everyone else???