Bent Up Cycles - SRAM etap blip box. Technically, you only need this and don't need the blips. But I have found that shifting with the blips by the brake levers works
Mountain Bike Action Bike Hacks: A Better Dropper Seatpost - Mountain Bike Action Magazine
eTap Blips | ES-EAC-BLIP-A1 | SRAM
SRAM RED eTap AXS Electronic Aero Road Groupset - 1x, 12-Speed, AXS Blipbox, 2 Blips, 2 Clics, eTap AXS Rear Derailleur, 2022 | Electronic Groupset Upgrade Kits for sale in East Petersburg
How to Route Cables on Sram Red eTap Aero - YouTube
Mountain Bike Action Bike Hacks: A Better Dropper Seatpost - Mountain Bike Action Magazine