How do you handle scheduled windfall/bonus time?

[Olav23]

For people around here who get a small (or large) scheduled windfall, like a 6 month bonus, how do you deal with it?

Just wondering if you guys cram it into the taxable account and make one big fund purchase, or if you time it over a period of time. Or pound it into the mortgage, or what. Personally, I am a renter, so this isn't an option.