What present do u get for ur mum who's turning 50?

mums turning 50 in april, i have no idea wot to get her, and it doesn't help when shes so indecisive (eg 'i dunno' thats all she says). so any suggestions on wot to get her? i was maybee thinking a health spa or somethin? (i stay in Greenock but was thinkin of going to Glasgow since this towns crap n Glasgow has all the best shops). But whe i showed her all she did was 'mmm ' then walked away. So anymore ideas?