I finally ordered a space saver with tool kit from here:
17" Space saver spare wheel + tool kit compatible with Toyota GT86 (2012-present day) Cheap Spare Wheels & Space Saver Wheels - Thewheelshop.co.uk
www.thewheelshop.co.uk
Reviews seem not bad and company looks legit. Oh they have a Black Friday 10% discount on offer too.
Spent way too much time scrolling eBay for Subaru space savers

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Otherwise, the roadhero kit was my next option. More expensive, but better wheel and accessories. 5% discount with carnoiseur, or if you add to watchlist on eBay.