Playing against these short-buy nits is a big part of the low stakes ring games on Poker Stars
because at certain times of the day, 25-50% of the table can be made up of them.
Small pocket pairs: I usually toss them when raised by these guys.
High pocket pairs: I'll gladly put them all in with JJ or higher, unless my notes say he's really tight.
Strong aces: This is what I'll often call with, but only with position. So many of the short-buys once they choose a hand, are pot committed. They'll bet 3-4xBB preflop, then push no matter what comes out on the flop. Easy to felt them when you hit.
As for tossing the small pairs, I tell myself that I'll make the money back by raising their BB at every opportunity.