I get all kinds of ideas online. I also do a whole lot of my supply shopping online. Here are some of my favorite online sources and what I use them for.
This is my go to resource for buying crochet supplies online. My favorite products on this site are the travel OK bamboo crochet hooks, Caron's simply soft and simply soft eco yarns, and Bernat's satin yarn. My all-time favorite purchase was the Eagle good to go knitting tote which unfortunately the website doesn't carry anymore. I would highly recommend getting one if you can find it somewhere!
wilton.com is my go to for all things cake decorating. From ideas, techniques, to purchase of specialty cake pans I check this site to see if I can find it here.
I get many of my beads here. My favorites from this site are the lamp work beads, the metal spacers, and metal round beads.
crochetpatterncentral.com has a huge library of free patterns for crochet. I tend to scan this website for ideas when starting something I have never made before. I usually get an idea of how it is put together and then change it up with colors and pattern to get exactly what I had in mind. For the most part I have had success with the patterns and have had very little failures. Tip: (pretty much all yarn brand websites also have a free pattern section for both crochet and knit.)
ehow.com is a vastly useful site. I have used it to get everything from instructions on how to recover lamps and dining room chairs to making my own stencils. I love browsing through ehow to research projects that are on my list and to find shortcuts and directions on things I haven't done before.