I can agree with others’ opinions on the brand TECO. I have one. I think I spent around 1500NT$ for it almost 2 years ago (it can be extended to up to about 80 cm height). It’s controlled by digital push buttons (not mechanical buttons).
What I especially like about this fan, is that its slowest speed uses a special periodic on/off switching, so that it generates just a small, gentle ‘breeze’, which is very nice to use while sleeping. This electronic controlled speed would turn on the fan for 4 seconds, off for 4 seconds, on for 4 seconds, … and so on). The resulting sound is almost like listening to the waves of the ocean… who knows this might help you a lot.
If a fan would not help you, there are a kind of earplugs which employ electronically generated ‘white noise’ (sound). These things can be expensive, though. I’ve never used them, but I know some people swear by them. They cancel out any other background noises. White ‘noise’ can also be likened to the sound of the ocean.