Right, so Halloween's the obvious time to get into paranormal investigations (even though the best activity's probably in winter and spring when it's genuinely dark), and if you're thinking about giving it a go but don't want to drop three hundred quid, here's what actually works:
£30 - EMF meter (Meterk as discussed above). Essential. Everything else is secondary to this.
£20 - Digital thermometer Get one with a wireless sensor. Temperature anomalies are real and measurable. Any basic one from Argos works fine.
£15 - Night vision monocular Okay this is the budget option - not brilliant but functional. Lets you move around safely without using a torch which can contaminate investigations.
£25 - Audio recorder Dictaphone style. Cheap Philips one from Currys. EVP investigations (recording for electronic voice phenomena) are contentious but they're worth documenting.
£40 - Ring light and phone tripod For photographing areas and maintaining consistent lighting conditions. Crucial if you're comparing photos across multiple sessions.
£20 - Notebooks, pens, backup batteries Organisation matters. Write everything down. Date, time, location, atmospheric conditions, baseline readings, everything.
Total: £150
This isn't professional level, but it's legitimate. You're not going to look ridiculous and you'll actually collect useful data. Start here, upgrade later once you know what you actually need.