Jesus...I have so many points on mah nectar account...(almost £100 worth of points)

I guess that's what happens when it's linked to my eBay account and how Sainsbury is where I (used to) do 75% of my shopping plus it's where 99% of the time I fill up for fuel as it's the cheapest (I mean come on, I drive a 1.4L, it doesnae need shell's "special" formula) plus it's typically on the way (both Glasgow and Edinburgh) so makes plenty of sense (probably also helped how quite a few times, I've bought quite a lot of items off eBay whilst a 3x point scheme was happening).

I know point schemes like this are a bit of a false economy as it encourages you to spend more/gives advertisers data about your shopping habits but still, when you limit it to actual needs (and wants that are really bad whilst you can actually afford it), it can save you a little monies. 

Anyway, what do I do with the unexpected £100 I now have? Should I spend it wisely or go buy a new mouse? 

Probably will end up using it to fill up my car 2.2~ times as that will give me about 1.25 months of petrol