The following are links to websites and some blogs that are not homeschool specific but are often very handy for homeschoolers.
The Kids Should See This - Great educational videos
Fit 4 the Classroom - Fitness Education, physical and emotional
The Blog of Mr Q - Science curriculum downloads, paid and free
Cosmic Kids Yoga - youtube
Zooniverse - Conglomeration of science sites
Free Science Labs
DIY.org - Often described by users as like an online Scouts
Maths Worksheet Site - Create your own maths worksheets
Duolingo - Learn other languages for free
Teachers Pay Teachers - Website with a lot of resources uploaded by teachers, homeschoolers etc. Some free, some paid.