Free wireframe sketch font: ‘BonnySketch’.
This is a free-to-use handwriting TTF font, made using my own handwriting! I made it to use when editing sketched wireframes (a bit quicker that using Tip-Ex!). The font was made using the online service Your Fonts. If you use this in your work, you’ll have to beware of strange kerning, as this is not an artisan font, just a rough and ready handwriting one.
The font is free to use as you wish, all I ask is that you do not re-sell it. Thanks!