The first unsurprising thing I will say on this page is that I like bats. They are spectacularly odd little beasts and I find them fascinating.
The second unsurprising thing I will say is that I get a good many search hits for knitting patterns featuring bats. (With a subtitle like 'do bats knit?' I don't know what else you would expect). Herewith follows a short and entirely incomplete list of bat-related knitting patterns on the web. If you are looking for a more comprehensive assortment of bat-themed knitting projects, I suggest flying over to Ravelry (echolocation not required) and using the excellent pattern search tools there. I try to keep the links here up-to-date but sometimes things slip; therefore I've included the Ravelry links for the patterns (when possible) to keep a more stable address available.
Patterns marked with a * are ones I have knit myself and can recommend.
Softies:
*Batty the Vampire Bat Proceeds from the pattern sales go to benefit Bat Conservation International. Ravelry
Bat and Jack o' Lantern. Ravelry
*Boo. Ravelry
Garments and Accessories
Bataclava for those who really want their own Batman cowl. Ravelry
Bat Hat in stranded colourwork. Ravelry
Batsy mittens in stranded colourwork. Ravelry
Fu scarf with a lacy bat motif. Ravelry
Gone Batty wristwarmers in stranded colourwork. Ravelry
Shadow of the Bat illusion knit scarf. Ravelry
Wa na na na na na na na Bat Shawl! with a lacy bat motif. Ravelry
Other
Batty dishcloth with a simple knit/purl motif. Ravelry
Chiroptera dishcloth, using the same lacy motif as the 'Fu' scarf. Ravelry
Going Batty Treat Bag with a lacy motif. Ravelry