8×8 Glyph Editor → uint64

Click cells to toggle pixels. Bit order: row-major, bit 63 = top-left, bit 0 = bottom-right.
Glyph index:
You can just change this for your own notes.
Bitmap uint64 (hex):
0x0000000000000000
Solidity line:
Row bytes (top → bottom, 0 = off, 1 = on):