antenna
2.4 antenna: wifi, bluetooth
for sticking inside of enclosure https://www.electrodragon.com/product/2-4g-soft-fpc-pcb-antenna-ipx-rohs/
for remote-control toys https://www.electrodragon.com/product/5pcs-2-4g-cable-type-antenna/
GSM antenna
https://www.electrodragon.com/product/pcb-build-antenna-4g-gsm-3g-wcdma-gprs/