$2.99 - Round 2 x 2032 Coin Cell Battery Holder with ON/OFF switch - 6V - Tinkersphere
CR2032 Button Cell Holder - Bare Board, Kit or Assembled
$1.75 - 2 x 2032 Coin Cell Battery Holder with ON/OFF switch - 6V - Tinkersphere
Single CR2032 / 20mm Coin Cell Battery Holder with Switch : ID 4856 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Ag13 Button Battery Holder With Shell With Switch For 3pcs 3*ag13 Button Batteries 4.5v - Buy 1pc Hold 3x Toy L1154f Battery Ag13 Button Coin Cell Battery Holder Case Storage Black Box