Right, now what do I do with them?

These are bricks and a roof tile from Oxburgh Hall.
Major restoration has been taking place over the past 5 years which involved replacing the whole roof. It is now coming to an end so we will soon see the house free of scaffolding and plastic sheeting (end of Jan.22?).
The old roof has been offered, in pieces, in exchange for donations so I decided to buy these two bricks and a roof tile. The bricks were almost certainly from a chimney - of which there are 27 - The one at the back has numbering on it - as the chimneys were dismantled each brick was coded as to which chimney it was from and some were reused. Others have been replaced with new (but almost indistinguishable) copies. The roof tiles were all replaced. The ones removed were either black  or red. The black ones are by far the older - the red ones dated from the time of the last roof repair in the mid-late 1800s. The house was built in 1482.
So, here they are, still in the car - what shall I do with them now?