This took a while, so I hope you enjoy! Keep in mind that this is still in beta.
How to use:
click one of the bubbles next to the squares or text box to choose how to draw. If you check a box, click on the board, then drag the mouse to someewhere else, and let go. Voila, a box appears!
For the character drawing, delete the character in the box and paste/type in a new character and click the bubble, then draw on the board! Default character is solid block.
The line in the top left. I don't know how to get rid of it, but it's not too in the way. Hopefully it doesn't bug you.
-More border characters
-Add special (decorational) characters
-Allow direct typing into the grid
-Reduce code size (It's very bulky as of now)
-Make it nicer looking