Hi sg, The quantity of ash is not large, probably about as much as a 2lb bag of sugar. For the purpose of interring the ashes in a churchyard plot, the ashes are placed in a an urn which is like a fairly small pot, or in a small wooden box with a brass nameplate. Or you can choose to have the ashes buried in A Garden of Rest at the Crematorium.
Has your father already passed away, if so you will need to speak to the Funeral Director, and explain that you would like to have a tiny amount of the ashes. If you provide a little box, either wood or china, the funeral director will oblige your wish. It is usual to have the ashes interred a week or so after the funeral service, and to have a minister or vicar present to commit the ashes to the ground. It is usually very sensitively done, as it is a form of a last goodbye. I hope this information has been a help to you. If there is anything further you wish to know please post on here again. Best regards, Schutz.