Here's my entry! I did a few variations. Press space! Also, press s to see what it would look like icon-size. I am making a better thumb..
I wanted something that related to the username and looked good in small size. Please tell what you think and which logo was your favourite!! All graphics done by me in inkscape. I got the font from dafont. I did the horse and head by referring to pictures on Google and my sister's LEGO stable set:PP I personally think this is one of my best logos.