PSA-45-033 60W 3.3V 10A AC-DC Switching Power Supply Phihong®
Breadboard Power Supply Module - 3.3V/5V - ElectroPeak
Amazon.com: ALAMSCN 3.3V 5V MB102 Solderless Breadboard Power Supply Module with 9V Battery Clip Power Cable 2.1x 5.5mm Male DC Jack Plug for Arduino (Pack of 3) : Electronics
3.3V & 5V DC-DC power supply, 7-36V in, 2x1.5A out from Offerman Industries on Tindie