More fun with insomnia

Well, after-Christmas seems to have heralded the return of sinus-related insomnia.  I've got a mild head cold right now, thus being awakened at 3am by the 4-year-old can potentially mean the end of restful sleep for the rest of the night.  Sad to say I've been awake for 5-1/2 hours now, and vertical for 2-1/2 hours, but functioning is at a sub-optimal level.  In another hour or two people will be expecting things of me and I'll just want to nap.