Amazon.com: CO RODE 3mm and 5mm LED Lights Emitting Diodes Assortment Set Kit for Arduino Bright White Red Blue Green Yellow, 300-Pack : Industrial & Scientific
$14.99 - NE5532 Pre-Amplifier Preamp with Treble, Alto, Bass and Volume Dials - Tinkersphere
Sharp EL-377WB 10 Digit Professional Handheld Calculator - Zerbee