The present invention is a universal ‘;replacement lid with nipple assembly’; that removably affixes, via threading, to inter alia thermally insulated bottles. The instant invention features a “replacement lid” with a cylindrical hole through the center. The [bottle's] “replacement lid” [and its corollary attachments, components and features] turn an ordinary bottle into a universal baby-bottle. Atop said hole (annular aperture), rests a ridged rim/lip, under which is positioned a plastic nipple (with optional lugs to further secure said nipple in place in the deployed position). A “sealing disc” and a half-eggshell-cap together prevent spillage when not in use. The nipple “clips in” under the lid ridged lip, and may be stored “upside down” when the bottle is not in use. This feature, combined with the novel feature of a “sealing disc,” allows for secure, leak-proof nipple storage. When “in use/deployed-position,” the nipple simply turns “right-side-up” and “clips in” to the [bottle] replacement lid [positioning itself just underneath the outer-circumference ridge-lip], allowing for normal dispensation of liquid to the baby. Alternate embodiments also function as a replacement-lid-nipple (with valved-spout) for toddlers' “sippy-cup” type devices, as described infra and supra. Also of note is that said invention is compatible with both aluminum bottles and also double-walled thermally insulated bottles.