Adafruit Small-Size Perma-Proto Raspberry Pi Breadboard PCB Kit
3x Adafruit Perma-Proto Half-sized Breadboard PCB
Breadboard Friends PCB Set - Modular Addict Synth-DIY
Universal Proto-board PCBs 4cm x 6cm - 3 Pack : ID 4785 : $2.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: SB5x2 Snappable PCB BreadBoard with 5-Hole Strips 2-Pack, Scored PCB, Snaps Into 4 Small Boards, 2-Layer, Plated Holes, Power Rails, 2.8 x 3.8in (73.7 x 96.5mm) : Industrial & Scientific
1 Pcs New 400 Tie Points Solderless PCB Breadboard Mini Universal Test Protoboard DIY Bread Board for Bus Test Circuit Board|bread board|board diybreadboard solderless - AliExpress
2pcs 400 Tie Points Holes Universal Solderless Pcb Breadboard Mini Test Protoboard Diy Bread Board For Bus Test Circuit Board - Double-sided Pcb - AliExpress