1) I need a creative outlet for my inner, hands-on geek (since I don't work in a lab anymore).
2) I am secretly jealous every year when I buy sciencey toys as gifts for my nieces and nephews every year.

Regardless of the root cause(s), sometimes you just have to look yourself in the eye and say,
"I need to buy that packet of Grow Snow hanging from a display in the grocery store cereal aisle. Better yet, make it two packets...for my sanity."
Followed by,
"And now I need to play with it."
With that said, please enjoy the fruits of my self-indulgence...