WisHome Waterproof Battery Operated Submersible Multicolored LED Lights with Remote (Pack of 2): $10.97 After Coupon YOK3YHIN (lowest price ever, good reviews)

I’ll be completely honest – these have absolutely no practical application in my life… but they are freaking awesome. Drop these in a vessel of water and watch the pretty lights… then press a button and watch a different color of pretty lights. Use code YOK3YHIN to get two for just $11.