A practice I saw reported:
I actually just bring my deities (if brand new) to the Mandir... specially wrapped and carried in like a baby... and ask the Priest to do PranPrastishta for my new Murti. And so he does a simple prayer with the murti (and me too?? - I forget)... And from there I bring the murti home and when I wanna pray or have formal puja I just begin by ringing the bell... etc..
I have seen a "renewal of power" ceremony of an idol and it is based on capturing the power of Vedic chants in water in kalashas and bathing the idol using the sanctified water by bathed and sanctified priests. The idol is sanctified where it would be worshipped going forward - not sanctified somewhere else and carried by the devotee back home.
This semi-"Do it yourself" procedure seems new. Is it allowed per scripture?