The Rekrow Butane Burner is a great little addition to any syphon lovers collection. This allows accurate control over the water temp you're brewing your syphon with, which is the only drawback of the alcohol burner that comes with the Hario syphons we have for sale.
It's a a solid little metal unit with a built in safety valve, adjustable flame control, electronic spark ignition and will give you around 60mins of fun per refill. Refills are cheap and easy.
Here's a link to a Syphon & Burner Combo back.