As someone in a similar situation, just throw it all in VTSAX vanguard or FZROX fidelity and let it sit for the next 30-40years. Dollar cost average over the next year maybe if that makes things less nerve wracking.
Obviously we are in a really crazy market right now, and while that might be disconcerting it is the case that s&p 500 has existed through 2 world wars and a Great Depression and still delivered returns.
No idea why that comment ended up dead. But anyway, in that case, one potential thing to invest in is a own company. If that is something you are interested in. Not now, but when the timing is right. Until then, leave the money where it is.
One other thing would be an extended travel / sabbatical. As soon as this is an option again, of course. Regarding the startup thing, this is what I did after two years. Less money (keep some funds for rainy days!), but with a house and family.