Don't forget their ancient, Pre-Christian Uuuuiiiilleeeeannnn pipes.

Oh, sorry. That was Prehistoric (18th century) Ireland.

Woad was just the thing to scare the dinosaurs in Ancient Britain, though. When you staggered out of the pub after being snowed in there for a couple of months, those velociraptors would be hanging around out there in the (anachronistic) Celtic Twilight, just waiting to bite your head off and drink the rest of your beer. If you were bright blue, they'd lay off in order to avoid the risk of food poisoning.

Well, that's what my third Grandfather (the one who was a Druid) told me. Unless he didn't, and I made it up all by myself. I've already warned you about fiddlers.