It is only one time that one is able to meet the Three Rare Sublime Ones;

     It is extremely difficult to see them for hundreds and thousands of eons.

     Besides seeing, it is difficult to even hear the holy name for hundred and

     thousands of eons.

     With every talent and effort of the capable (human) being

     Actually attempt to make offerings all the time to your wish-fulfilling jewel;

     The guru, rare sublime one, is the tip of the banner of devotion and respect.

     Attempt the method to completely fulfill all the temporal and ultimate wishes

     of sentient beings

     From whom unceasing enjoyments, peace and happiness come (one receives).

This is the condensed benefit of what is achieved by making holy objects. It includes the donors, artists and anyone who is involved in the building of holy objects. You can see clearly that the bigger the holy object, the more atoms there are and thus the more merit. "

 extract from the teaching BENEFITS OF HAVING MANY HOLY OBJECTS, Lama Zopa Rinpoche

the full teaching can be found on the FPMT website