On a blah market day I like to watch the ticker for stocks that can keep you dry when the market starts to rain.
A lot of my favorites are there:
INTC
TXN
UPS
WMT
TWX
VLO
GLW
AAPL
JOE
When your virtual portfolio is down, write down 20 stocks (that you like) that are up that day. Ones that appear on 7 out of 10 lists are excellent ones to balance out your virtual portfolio.