For a while I worked with a friend "reconditioning" laptops and selling them on Ebay (lots of just-out-of-warranty Dells and Thinkpads from local companies. Eas

For a while I worked with a friend "reconditioning" laptops and selling them on Ebay (lots of just-out-of-warranty Dells and Thinkpads from local companies. Easy to work on: upgrade RAM, swap HDD for cheap SSD, replace broken keyboards, etc.) We could sell them for a nice profit with very little work. I wouldn't want to do this work on many "modern" laptops since many parts are not (easily) user replaceable these days. Most passive income just comes from Index Funds/miscellaneous investments. But I don't really see it as income since it all stays invested/just grows until I retire some day. Still trying to find the right app/site/tool to build to bring in real passive income from something I have built.