I have freelancers I work with who tell me: "I'll just be fine when I've got 2 months of expenses in the bank". I tell them they probably won't, then they laugh, then eventually some of them see what I mean.
Sounds like you've got about 2 years of 'runway' in the bank - with no income and stable expenses, you could go for 2 years. I'm in a similar situation, and have found myself wanting less and less to spend any money. Some of that comes from simply remembering the effort it took to build up that amount, and then spending it literally in an instant on anything feels weird now. Yeah, I'd like a bigger TV (ours if 42" but 7 year old "ED" TV, not HD), but see little point in it as this one still works. Newer car? Yeah, would be nice - I can pay cash for a nice used car, but will probably hold on to this 8 year old one for another year or two.
The only things I'd like to buy, I want to pay cash for, and I'm still a long ways away (things like a private airplane, much larger house, etc). We do travel some - my wife will be going to Australia and I'll be going to Russia - buying those sorts of experiences with our families is one of the few things that we agree on spending money on. Outside of that, just continuing to pile up cash until there's a compelling case for spending it (or a true emergency need) is probably all you can do.