I had an iGrill mini. Connects via Bluetooth to your phone and works wonders. The base has a magnet to stick on your grill or to just set on your counter (just dont sit it on a hot surface or it will melt). Plus its under $50.

Weber iGrill Mini Thermometer With GrillingPros Weather Proof Meat Smoking Guide Magnet https://www.amazon.com/dp/B06XH21RKR/ref=cm_sw_r_cp_api_i_OQcBCbT1Z594A