- $19.99Paint by Numbers, Bloodhound Tracking a Scent, Adult Crafts Adult Paint by Number Kits, Arts Crafts for Home Decor(No Frame,16x20 inch), LivelyAmazon
- $19.99DIY Paint by Numbers for Adults Beginner, Cougar Tracking in Bush, Paint by Numbers Kit Dog Painting by Numbers for Adults Kids, 16" x 20"Amazon
- $7.993 Pack KY-033 One Channel 3 pin Tracking Path Tracing Module Intelligent Vehicle Probe Infrared Detection SensorAmazon
- $3.265pcs TCRT5000 Line Track Sensor Module Reflection Infrared Follower Sensor Switch Obstacle Avoidance Module KY-033Amazon