German has tonnes that are well known, but my favourite at the moment is Kaufrausch, which literally translates as 'shopping drunkness', but it's kind of the mindset you're in when you're going on a shopping spree.
You can be in Kaufrausch - it's a state of mind like 'shopping fever', where you want to buy stuff (probably more than you need) and perhaps are feeling exhilarated as a consequence.