As part of the Afterpay Day eBay Deal is a good price on these 240mm and 360mm AIO CPU coolers if you're looking to build on a budget.
They use 120mm fans, have a fan speed of 800~1800 RPM, ARGB support, and compatible with Intel LGA 115X/1200 and AMD AM4 sockets. There are several reviews on YouTube including this on the 240mm model.
Tecware Mirage 240 ARGB AIO Cooler $67.96
Tecware Mirage 360 ARGB AIO Cooler $93.46
Fan Specifications
Rated Voltage: 12V DC
Fan Size: 120 x 120 x 25mm
Speed: 800~1800RPM±10%
Max Airflow: 60.3CFM Max
Max Static Pressure: 2.05 mmH20
Max Noise Level: ≤35.2dB(A)
Fan Connector: 4-pin (PWM)Pump Specifications:
Rated Voltage: 12V DC
Speed: 2300RPM±10%
Pump Size: ø 70x32mm
Max Noise: ≤26.9dB(A)
Power Consumption: 2.1W
Pump Connector: 3-pin (5V ARGB)CPU Socket: Intel LGA 115X / LGA 1200, AMD AM4
Well, the kids have to learn about Tecware sooner or later.