In our local crematorium there are various different sections of garden. Some people have a v small plot in which to bury the ashes of a LO, and then have a plaque there. As an alternative, the crematorium allow a plaque to be put up in memory of a LO in the the section of the garden where the ashes are scattered - thus a plaque expense, but no plot expense
I know
@tansywoo you said you didn't want your mum's ashes scattered, and your dad didn't want great expense - would the alternative I've set out above be a compromise solution?
Or. other alternatives. (a) One of my late uncles was a keen sailor, and for some years he moored his yacht on the Hamble (off Southampton Water). I used to sail with him whenever he offered me the chance (and it was lot cheaper then having my own boat). He left a letter with his Will, requesting me to scatter his ashes in the Solent as I sailed his yacht to the Isle of Wight (and back). It was a lovely day out, and pleased his widow greatly.
(b) My niece, when aged just 12, was knocked down and died when riding her bicycle on a lane near where the family lived. My sister-in-law and her husband chose to scatter the ashes to the four winds from the top of a near-by hill they all used to love walking up. All the family call it A's hill; and we all planted a tree in our gardens in memory of this lovely girl.
Did your mum and/or your dad have a special interest or place that might be suitable for either burying or scattering the ashes?