Can you put it into other pensions? If it's from a pension, are there any tax implications if you take it as 'cash' rather than put it into another pension?
Otherwise, I'd put it into premium bonds for now.
I don't necessarily link 'having money' and 'spending money', they don't feel connected, to me. So in your circumstances, I wouldn't be thinking 'what can I spend it on', I'd just do something useful/low risk with it (ie pension, premium bonds, fixed term or instant access savings) and then carry on spending as normal and if a use for that money was identified, I would use it.
But maybe that's because I don't covet 'stuff', cars etc and don't enjoy planning and sorting/doing home improvements.
That sort of money would be good for a big but uninteresting project like new roof, electrics, windows, driveway, landscaping etc, if that sort of thing needed doing.