A few of the apps live on in emulation on my Android via StyleTap. One is the best astronomy map app I've ever used, another a favorite game (from back before platforms like Google turned us into product and incentivized developers to fill their stores with so much low-quality ad-infested in-app-purchase garbage).
I held onto a few models over the years which I kept as backup devices (eg. Palm V, Treo, an Enfora Wifi sled) and local copies of all the software to make 'em work. Quite confident I could bring them back to life for posterity (though secretly wish I could bring them back to life as a daily driver).