I remove the battery pack and replace it by a power supply and modify the wire attahment. Printed with PETG.

You will need:

(4) M3 x 10mm screws - (2) M4 x 25mm bolt and nut - 22 AWG wire -

(1) momentary micro switch: https://www.aliexpress.com/item/1005006874098780.html

(2) silver D-ring hook: https://www.aliexpress.com/item/1005006301243224.html

(1) AC 110V-DC-3V/3A power adapter supply: https://www.aliexpress.com/item/4000443793258.html

(1) 5.5 x 2.1 mm DC female connector: https://www.aliexpress.com/item/1005004779303986.html

(1) roll of .3 mm nichrome heat wire: https://www.aliexpress.com/item/1005005621405029.html

Switch mechanism comes from: Tofna1: https://www.thingiverse.com/thing:5369385

See this video: