I am a fan of these types of small multifunctional electronics equipments. I think every hobbyist should have one or more of these to play with. Here are some of them;

ExpEYES - Abbreviation for "Experiments for Young Engineers and Scientists" (http://expeyes.in/) from IUAC, New Delhi, India. It is quite affordable.

Redpitaya - https://www.redpitaya.com/ Can also be used to learn FPGA programming.

Analog Discovery 2 & Digital Discovery - https://store.digilentinc.com/usb-scopes-instruments-circuit...

ADALM2000 - https://www.analog.com/en/design-center/evaluation-hardware-... Can also be used to learn FPGA programming.