The Thousand Sons are an iconic Chaos Space Marine faction, but has very little in model support from GW. Apart from Ahriman, a conversion kit and the Forge World items, there is little in the way of a model range for them. That's why today's product, from the amazing Kromlech catalogue of bits, is a great alternative to the same bits.
Kromlech's Stygian range is well-suited to the Thousand Sons, or indeed any Egyptian-themed force. But for today, I'm only looking at their Stygian Nobles heads. For £5.05*, you get ten heads, each pack containing two copies of five different helmet designs, all coast in resin.
*based on current Euros to GBP info