another good way to get these icons are to grab them from their respective website. Lookout for something called favicon or shortcut icons.

Here's a few to get things rolling
http://www.maybank2u.com.my/favicon.ico <-- maybank
http://www.ambg.com.my/favicon.ico <-- ambank
http://apps2.emoe.gov.my/moe.png <-- KPM (might look nice to replace a school icon but may not get recognized as easily)
http://www1.uob.com.my/assets/images/home/favicon.ico <-- UOB Bank
btw. ico files are just actually bmp files with a diff extension. so no conversion is needed. Plus the icons are usually already 16x16 except for maybank which is 32x32

p/s: these icons may look simple but it is a mark whether the web designer is doing his work or not

so if u see a website without it.. say booo to the designer ... ahahahahah
The Journey NEVER Ends....
so make sure u don't get lost :p