Amazon.com: RuiLing 1Kit Electrical Circuit Experiment Set Home School Educational Set Fun Physics Experiment Homemade Series Circuits DIY Materials (Bulb Rated Voltage: 1.5V) : Toys & Games
Amazon.com: MroMax 200PCS Hollow Rivet 0.24" x 0.24"(Length x Outer Diameter) Through Hole Copper Hollow Rivets Grommets Double-Sided Circuit Board PCB : Industrial & Scientific
100-Pack 2020 2040 2060 Roll in Spring Loaded T Nut m3 for 20x20 20 Series Aluminum Extrusions 6mm Slot Aluminum Profile Accessories (M3): Amazon.com: Industrial & Scientific