I've noticed a couple of guys recently wearing red or black military-style berets and I think they look pretty sharp. They can be had inexpensively hereabouts as well as for under $10 on ebay.

tams and glengarry hats just don't "do it for me"...though that's just me, ya know? If they float your boat, then that's great.

Anybody ever tried a military-style beret with a kilt?

I'm thinking that the XMarks pin would look pretty sharp on a beret.