Needlework

Cross Stitch Charts from photos

My Photo Stitch a free service that takes photos you upload and gives you a cross stitch chart using (last I checked) DMC colours

Knots

Turk's Head Cord length calculator

http://turkshead.50webs.org/

Turk's Head Knot designer

http://data.oreilly.com/jallwine/knots/

Globe Knot Core Calculator

http://khww.net/gkcc.php

Turk's Head Design Playground

http://web.meson.org/crafts/TH/TH.html

Kumihimo Braiding

8 strand kongo gumi colour planner

http://www.lythastudios.com/123bead/kumiplanner.html

16 strand kongo gumi colour planner

http://craftdesignonline.com/kumihimo/

A colour planner for the 7-loop Spanish finger loop braid

http://www.islandlife.heliohost.org/cgi-bin/fingertips.pl

Spinning wheels in general tend to very expensive. Apparently, powered spinning wheels are very, very expensive. But if you (or someone you know) have the DIY spirit, you too can have a nifty powered spinning device (wheel part no longer needed).

http://www.glacialwanderer.com/hobbyrobotics/?p=79