We once had a large caterpillar that did the whole cucoon thing. Don't worry, caterpillars usually take weeks, if not months, before they are ready to wake up and come out of thier cozy silken bed. I'm not so sure about the smaller caterpillars, but I should think that it would take several weeks before OOTB is ready to come out and play. Out of the Box, as in that one kids show on the Disney Channel?
Oh great! Now I have the OOTB song stuck in my head...
I woulda nixed the pet spider idea too! *shudder*