Basic blinkers attached all year round, just not-so-cheap Cateyes - 6 LED thing on the front that's remarkably bright, and one of the newer ones on the back that's 2 little LEDs and a big one in the middle. The rear is set to just blink the little LEDs during daylight, but goes on full disco after dark.
Got an LEDWear backpack cover which gives me flourescent which works very well in muggy daylight, reflectives and a VERY dodgy set of LEDs for nightime. Scrapping that as soon as someone buys me a Carradice bag! Hope Vision One on the front gets turned on at night - best cycling related purchase I've ever made.
Anyone recommend helmet lights? I've found people with these on VERY noticeable, even when the lights themselves aren't terribly bright. Thinking of getting some little things like Knog jobs to attach, unless there's anything compact out there that takes AAs? Got millions of rechargeable AA batteries!