All icons are free to download and use. I have linked them over to the creators website’s. Also there are a few more resources at the bottom of the post that I would definitely recommend.

1. Dry Icon Set

2. Spoon Graphics

3. Snap to Objects

4. Web Treats – Neon Icon Set

5. Web Treats – Glossy Wood Icon Set

6. Web Treats – Glossy Blue Icon Set

Other Resources to the mother load of icons

600 Social media icons The Design Cubicle

24 Free exclusive icons Web Designer Depot

6 Test tube icons by noupe Noupe