Generates interesting JS1K logos (in a tweet!). Updated with a more interesting shape, and decoupled the position from the shape (I could spare the bytes).
with(document.body.children[i=0].getContext("2d"))for(translate(40,40);i++<44;rotate(39)){fillText("JS1K",9,4);fillStyle="rgba(0,0,0,0.13)"}
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with(document.body.children[i=0].getContext("2d")){
//Abused the for loop to save two semicolon characters
for(translate(40,40);i++<44;rotate(39)){
fillText("JS1K", 9, 4);
fillStyle="rgba(0,0,0,0.13)";
}
}