  In this contribution we review the ideas and results presented in the
articles arXiv:2002.01764 and arXiv:2110.08276 where the decay of AdS vacua
into bubbles of nothing is studied. We firstly consider AdS vacua in General
Relativity with a cosmological constant and in arbitrary dimensions. In this
context we study a class of gravitational instantons generalizing the Witten's
bubble of nothing and we discuss the derivation of the euclidean action.
Secondly we consider a "stringy" non-supersymmetric AdS$_4$ vacuum arising in a
compactification of massive IIA supergravity on a $S^6$ and preserving G$_2$
symmetry. This vacuum has been shown to have a fully stable KK spectrum and
also be protected against brane-jet decays. In this framework we discuss a
bubble solution in massive IIA connected to the G$_2$-invariant vacuum and
associated to an instability channel. We finally provide the interpretation of
this instability in terms of the nucleation of a bubble of nothing dressed up
with a D2 charge distribution.
