divided plastic tackle box KastKing Utility Boxes, 3600 and 3700 Fishing Tackle Trays underwater Color:Metallic Silver Blue Scale Dawa-Carp Fishing Rod, Ultra Clear W/Dividers provides standard

divided plastic tackle box KastKing Utility Boxes, 3600 and 3700 Fishing Tackle Trays underwater Color:Metallic Silver Blue Scale Dawa-Carp Fishing Rod, Ultra Clear W/Dividers provides standard

Dawa-Carp Fishing Rod, Ultra Light, Ultra Hard Carbon Rods, Telescopic Fishing Rod, Large Object Rod, 4.5m-8.1m, 4H, 5H, 6H, 8H - AliExpress 18

She writes about smartwatches, TVs, audio devices, and some cooking appliances, too

underwater

Color:Metallic Silver Blue Scale

Then you can just lower it in the water column and know exactly what temperature the water is a various depths

Clear W/Dividers provides standard compartment length adjustments.