Using miswak( Or tooth brush in modern day) .

1. A salat offered after one has used a miswak is 70 times superior to the salat offered without it. [Ibn Nejjar]

2.”Had I not thought it difficult for my Ummah, I would have made it obligatory on them to use the Miswak (tooth-stick) before every Salat.” [Al-Bukhari and Muslim]
…
3. [Sahih Bukhari: Volume 1, Book 11, Number 618]
Narrated ‘Abdullah bin Umar (Radi Allah Anhu): Allah’s Apostle (sal-allahu-alleihi-wasallam) said, “The prayer in congregation is twenty seven times superior to the prayer offered by person alone.”

Applying this in ramazan woluld mean that every prayer gets 70 x 70 x 27 = 132300 more reward than it would have given otherwisE