So I bought some used lifters off of EBay, but I don't plan to goof around with the valvetrain for several months. Any suggestions on keeping these parts until then. Since they're used, they're basically just awesome dust attractors right now. Should I soak them in motor oil in a plastic bag? Do I need to clean them well later, before I install them?

 

let them soak in oil..... and they'll be ready to install, when youre ready.

 

Yep. Make sure they are completely submerged in clean oil for the duration of their storage.