For a present, maybe something like a '60 memories' box where family and friends write on a card a nice memory they have shared together and include a photo or drawing.

A weekend away in unique accommodation like a yurt, tree house etc. http://yurt-holidays.com/.
If she likes active holidays, a horse riding trek.
Likes to be pampered? A night at Claridges or Savoy or somewhere equally indulgent with afternoon tea there or Fortnums.

Hi

I have my mums big 60th birthday in May and looking for a few suggestions to do - original suggestions for a special day /weekend out.

Looking for some ideas - no budget at the moment but would be great to involve a few select adult family members.

Thanks in advance