EXTRA CREDIT? You haven’t even turned in your final lab reports, and you’re already asking for extra credit? This speaks of a serious lack of confidence, and I don’t know that I should pander to your low self-esteem. Tell me instead that your work on the final exam and the last lab report will dazzle me so much that giving you a mere “A” will be insufficient, and I’ll have to come to your homes and clean your house to make up the difference.
Besides, didn’t anyone ever tell you that a cluttered lab is an active, happy lab?
And that tank with the yellowish water in it is actually a dilute bleach solution that I use for sterilizing. It is true that I should flush that and replace it with a fresh solution, though.
So maybe there is a place for having a lab clean-up day. I could make meticulousness part of the lab grade, and dock you all 10% of your score if the lab is in a less than sparkling state at the end of the term. Yeah, that’s what an evil professor should do … I’ll have to think about it.