Zebra is a 2x 1-to-3 passive (unbuffered) multiplier. Input one cascades to all 6 output jacks, or can be interrupted by plugging a cable into the fourth jack from the top.
BOM: 8x Thonkiconn jack.
PRICE: panel + PCB = 12€ + shipping

Leopard (aka 3xA) is a trio of passive attenuators. Inputs on the left, outputs on the right.
BOM: 6x Thonkiconn jack, 3x 100k linear potentiometer (vertical “snap-in”, 9mm Alpha), 3x potentiometer knob.
PRICE: panel + PCB = 19€ + shipping