Amazon has 4-in-1 Carbon Dioxide Detector Indoor Air Quality Portable CO2 Monitor on sale for $23.99 after clip the on-page coupon. Shipping is free with Prime or on order $25+
4-1/2″ Cut-Off Wheel 10-Pack
$7.49
$15
2″ x 30-Foot Duck Tape 6-Pack
$12
$15
Heavy-Duty Foldable Hand Truck
$35
$50
We will be happy to hear your thoughts