What are some cool and beneficial tech gadgets? You know about.

Two tech gadgets or tools that I recently bought and love so far are a pair of IEMs (headphones that are more dedicated to sound quality) that pair really well with music listening and gaming. They are wired, but the industry has some Bluetooth products as well, and buying a DAC/amp to help improve sound quality, like the FiiO KA13, has been an amazing improvement to how I listen to music that I feel so immersed, and it's very powerful to the point where I hardly have to blast it.