Let the Cub Scouts prepare eight large placards, each with a large letter painted on it to match the initial letter of each verse.  As each verse is recited by a Cub, the proper lettis is displayed so that at the end of the eight verses, the words "Thank You" are visible to all.

T- stands for teacher, ours bear the test, as a Pack - we promise "We'll do our best".
H - is for helpful, which we try to be as each helps the other in the highest degree.
A - for advantages we all enjoy, we try to be grateful and wisely employ.
N - is for nation whose future depend, on all of us in the pack who want to be friends.
K - is for knowledge we're going to need.  We'll work hard to gain it and hope we succeed.
Y - is for youth all over the land.  God bless and keep us and steady our hand.
O - for opportunity around everyone.  We''ll grasp and hold tightly until we have won.
U - stand for usefulness, we like to serve.  We do what we can all praise to deserve.