I find the idea that a dollar bill is a seed in religious offering distasteful. If you give money with expectation it is no longer a gift. You are seeking to bargain with God.
The Bible says the Lord loveth a cheerful giver. 2 Corinthians 9:7. It does not say the Lord loveth a cheerful sower.
If you want your dollars to be seed, invest in the stock market or play the lottery. If you want to give to God, give to God.