What's the best possible item you can get for yourself, your friends and family, the geeky kid down the block, and your 8-legged sparkleflax from Venus? An io9 t-shirt of course! We've got four awesome designs to choose from, created by io9's own Steph Fox and available only at 604Republic.

Nothing says "Bring Ensign Redshirt down to the planet with you" better than this macabre tee with its skull/Enterprise mashup design. I love that it looks like skater nerd wear. Also, you can wear it while reading John Scalzi's new novel, Redshirts.

Leave it to your future mind-controlled minions to wear their hearts on their sleeves. You can wear your evil plan on your chest with these alluringly weird tees from La Fraise.

Still wrestling with your holiday gift list? Well, everyone loves a t-shirt! So we've rounded up the geekiest, silliest, sexiest, stylish nerdware (and threw in a few sweaters for good measure) to make your gift-giving a bit easier.

The weekend's coming, and you'll need some cool nerd duds if you're going to look right. Allow me to suggest these tees from Mighty Fine, each showing the rainbows-and-unicorns side of our favorite superheroes and villains.

If you need a really awesome shirt that will impress pretty much everybody, then your search is over. For just $20, you could be the proud owner of this "RoboCop on a unicorn" tee.

If you want to blend Periodic Table geekery with scifi references, then you need one of these element t-shirts from Busted Tees. Celebrate the amazing element Unobtanium, which we get by raping the Na'vi's native moon.

UK designers WakeUpTimeToDie have made three new Lost-themed tees available in their online shop. You can get a Dharma Initiative tee anywhere - what about a Drive Shaft tee? Or Mittelos Bioscience? Classic.

Show your devotion to robo-beasts of parallel Earth with two new tees from Threadless. Here we have the awesome Mechanical Octo, by io9 pal Kiriko Moth. And we also have a startlingly badass unicorn.

The true nature of our warrior plumbers and the mushroom people they destroyed is revealed in this amazing tee from Dr. McNinja. More truth-telling tees await you below.