Don't forget to take the power supply

Not letting the browser memorize your logon credentials is only effective in the event of loss or theft of the computer. It is no protection against keyboard loggers or other malware that gets into the computer. Same for the virtual keyboard. They may make you feel more secure, but they really aren't that much protection.
Always using secure sites when entering personal data is a must. If your email provider supports it, use SSL or TLS encryption for your email access. Without those, your user name and password are sent in plain text across the network. Be sure to turn off file and printer sharing for your WiFi adapter, if that's what you're using. Of course, don't open any unexpected email attachments, regardless of who it appears sent it. Use a secure browser, like Firefox with the security addons NoScript, Flash Block, and Ad Block Plus.