I like to reuse old computers and tablets at home (sometimes computers my father brought back from the dumpsters at his factory) as web servers, media-centers, or install a clean linux distro and give it to my little sister so she can have a personal computer.
But I have to improve my knowledge in electronics and hardware to not only change the software if I want to use broken devices or upgrade very old ones.

And also I put my wrappings and papers in the appropriate bin and organic wastes in the compost.