Saving multiple clipboard items triggered by different keystrokes

In v3.3.3 under Win10: How can I Copy MULTIPLE items into the clipboard(s) to be triggered by different keystrokes in order to selectively Paste them into tracks? E.g.:
– Different-length room tone gaps (0.4", 0.8", 1", 1.5", etc.) for use in different places in a narration.
– Different (de)Amplification effect settings (-4db, -6db, -8db, etc) for use in editing different too-loud plosives and breaths as needed.

If not feasible for Copy/Paste editing, is some other approach available to accomplish the same thing?