Walkie talkies are good too, as are Ham transmitters for the HF band, but really, if you want more then some vague idea do it properly.
Making up some semi proper kit is not that hard or expensive, and ferrite clamps are not rocket science.
Conducted susceptibility can be improvised to within maybe 6dB or so over the HF band fairly easily.
EFT? You can do something, but it is going to be very approximate.
Conducted emissions you can build a LISN and as the requirement only extends to 30MHz, a SDR can get you into the ballpark with some software to do the Qpk @ 9KHz BW.
Calibration is problematic, but if you have some box with known emissions measured in a proper facility you can derive a rough cal by measuring it with your kit.
Radiated? The FCC engineers back in the day published some designs for dipole/balun combinations that had known antenna factors, add a SA and an open field site... It is an expensive pain to do proper measurements but you can do comparative stuff fairly easily, and once you get above a few hundred MHz or so there are companies making PCB printed log-periodic antennas with more or less known factors for not stupid money.
An old 20 foot shipping container in the carpark can be your friend for some of this stuff!
Regards, Dan.