Samsung Galaxy SII running XFCE
Xfce4 is a GTK-based desktop environment aiming to be fast and lightweight.
It works on most devices with a working display, and runs fine without hardware acceleration. Uses packages from Alpine repo.
User interface: xfce4
Extra packages: xf86-video-vesa mesa-egl
matchbox-keyboardto get an on-screen keyboard 
Follow the Display guide to change and fix display related issues.
Window Manager settings, changing the theme to
Default-xhdpi will make window buttons and title bars larger. A font size of about 16 can work well with these themes.
Panel settings, increasing panel height, and setting panels to hide
Intelligently, will make them easier to interact with, without losing effective screen real estate.
This results in something like the right. The only obvious problem is the large, permanent, title bars.