My friend (DD of 7 and DS of 2) has asked for birthday party ideas for her DD who will be 8 in a couple of months.
I have no ideas suitable for children! No kids yet, just ttc, so no direct experience to call on. My adult 'parties' generally consist of dinner, drinks, dancing (if sufficient gin consumed) etc. This clearly won't work for a group of little girls - or will it... 
She's been quite clear that they haven't got a very large budget (I think about 30 tops) so the 'obvious' things like taking even a small group bowling or whatever are probably out. We're near Edinburgh if that makes any local cheap or free activities spring to mind. She and I have both googled but everything seems quite expensive. A party at their house is also out (understandable as they are having building work done, which is one reason for the low budget).
Any ideas? Please? Much appreciated 