I got a really good Glock 18 style electric water pistol off Aliexpress for this summer, at half the price they were being hawked for on Amazon. It even comes with a drum magazine- it was great for a music festival I went to recently!
Some things on Temu are complete trash but some are really good for the cash. They have a HUGE range of pin badges for less than a dollar, I’ve seen some of the more expensive ones ($2) sold for $10+ on other marketplaces like Amazon.
Jabra Elite 85t wireless earbuds when I’m out and about, noise cancelling Sony WH-1000XM5 headphones when I’m in the office/library/when my partner is WFH taking meetings, wired AKG K52 studio monitor headphones if I don’t want to disturb my partner when listening to vinyl or other high fidelity music- otherwise it goes through my Wharfedale Diamond 9.1 speakers. If I’m watching youtube or a film in bed on my laptop I’ll just use the laptop’s speakers
War Thunder. Well over 2000 hours across two platforms. I regret every minute and every penny spent.