Slider2732 | Scanner-01 a useful wearable, under $10 to build @Slider2732 | Uploaded September 2016 | Updated October 2024, 24 minutes ago.
Based on code by danbicks, this is a wearable IoT WiFi Access Point scanner.

Link to original thread:
esp8266.com/viewtopic.php?f=29&t=3256

Link to Arduino IDE code, as seen in this video:
s000.tinyupload.com/?file_id=90699539842482535336
Unpack the zip folder to your Sketchbook folder and open 'Scanner-01.ino' to change home network details/Thingspeak and to upload.

Example prices of parts used -
ESP8266 (any type):
ebay.com/itm/ESP8266-Esp-01-Serial-WIFI-Wireless-Transceiver-Module-Send-Receive-LWIP-AP-STA-/262136737709
0.96" OLED screen:
ebay.com/itm/3-5V-0-96-12C-Serial-128X64-OLED-LCD-LED-Display-Module-for-Arduino-White-BS-/272361659763
250mAh lipo:
ebay.com/itm/3-7v-250mAh-Lipo-Battery-For-Hubsan-X4-H107c-H107d-H108-UDI-U830-RC-Quadcopter-/162181250700
Diode, couple of resistors, switch etc: from junk circuitboards