I had a chem teacher that would blast stinky sulfur air-gas during labs with one of those. Was not at all safe. He was the best, also had a great dildo.
I think he should buy half as many ladybugs so he can afford a vibrator as well. Make sure to buy both from Amazon itself so someone has to pack them and think "W...T...F".
If he has some money left over, maybe toss in a book on forensic entomology.