Review on 📦 Handheld Enclosure, Box, and Case - 4.62 x 3.11 x 0.95 inches (1 piece) by Cody Clark

Suitable for my needs. With the mic amplifier board from e Bay and an ATmega board it's there to house all of this. Update: Some reviews don't mention enough room for a 9V battery. With the included spring clips, the case holds 9 volt batteries perfectly. The terminals are solderable so you simply attach the wires and insert the terminals. What it doesn't have are 4 small screws that go in 4 holes to hold your CKT board. It would be much better if the battery were already installed with a small slide switch on the side.