Quantity   Component name
1 × Enclosure (New Age Enclosures S-272008) https://www.newageenclosures.com/enclosures/utility--desktop/small-utility.php
1 × USB Connector (USB-B-S-RA-WT-SPCC) https://www.digikey.com/en/products/detail/adam-tech/USB-B-S-RA-WT-SPCC/9832261
1 × USB Charger Brick Any will do.
1 × USB B cable You probably have at least one for your printer or Arduino.
1 × Stereo Headphone Jack https://www.digikey.com/en/products/detail/cui-devices/SJ1-3555NG/738708
1 × Headphone cable with plug and a long cable You don't have to use a headphone cable. You could use a different connector style like .1" header or just solder the cable directly.
2 × 5MM Red LEDs
2 × 5MM Green LEDs