As a child, we said:
Earth, we thank you for this food,
for rest and home and all things good,
for wind and rain and sun above,
but most of all for those we love.
I know the traditional Catholic prayer is:
Bless us oh Lord
and these thy gifts
which we are about to receive
from thy bounty
through Christ our Lord, amen.
My Catholic and very comedic grandfather used to joke around and say:
Good food, good meat,
good God, let's eat.
I just read somewhere about using the Johnny Appleseed song as grace:
The Lord is good to me
and so I thank the Lord
for giving me the things I need
the sun and rain and the appletrees,
the Lord is good to me.
(There are more verses too)