These are my favourite blogs, roughly in order. Follow them all!
time-wave.tumblr.com I thoroughly adore this blog. If you love moleskines, typography, illustration and other art, you’ll love it too.
http://aplaceforart.tumblr.com/ Cute arty blog! Plenty of moleskines, typography and watercolours
http://a-r-t-e.tumblr.com/ A blog specialising in detailed typography.
http://end-ofthe-rainbow.tumblr.com/ A colour coordinated blog with a twist. Vivid colours intertwined with a variety of grey/black pictures. The effect is magical - check it out!
http://t-a-h-i-t-i.tumblr.com/ Brilliant blog. So exotic. Lots of those blue Moroccan buildings, animals and culture.
http://grapefruit-splash.tumblr.com/ Fruity/boho/colour
http://show-me-something-pretty.tumblr.com/ This girl is bloody amazing! She has spent so much time arranging all her posts into different sections. There’s something for everyone. Definitely worth checking out.
http://fairy-wren.tumblr.com/ I’ve only recently started reblogging all these birds, but they are just so magnificent. A really well made blog right here.
http://infinite-blotches.tumblr.com Remember those butterfly paint blotches you made in primary? Yep, this blog is full of them.
http://urban-myth.tumblr.com/ Not very active, but the intricate art is so worth it!
http://thedesigncenter.tumblr.com/ Awesome patterns, designs and textiles. Huge archive to explore!