That's useful. I've been buying old Asus EeePC machines on eBay for small projects. Unlike a Raspberry Pi, you get a keyboard, screen, case, and power supply, all for under $50. But the supply of old subnotebooks can't hold out forever.
I increased the RAM of my EEEPC 901 to 2 GB years ago (2009-2012?) and I used it to develop Rails applications on trains and during a vacation. Not as fast and comfortable as my Core 2 Duo laptop at that time, but it worked. By the way, it still works even if I don't turn it on often nowadays.
