I picked up a mint condition Toshiba NB 100 for £30, put in a 128 GB SSD for £50 and extra memory was £20 AFAIR. Running Xubuntu it's silent, the fan never seems to have to do any real work. The only downside being the grey lettering on a black keyboard is hard to see in poor light.
After installing Xubuntu everything worked immediately, it's a handy travel device.
If I was nefarious I could run macchanger and hang around unsecured wi-fi for dodgy downloads.
I presume that Win 10 won't allow that or will dob you in to the police if you try.