  Morrison, Walker, and Wedrich used the blob complex to construct a
generalization of Khovanov-Rozansky homology to links in the boundary of a
4-manifold. The degree zero part of their theory, called the skein lasagna
module, admits an elementary definition in terms of certain diagrams in the
4-manifold. We give a description of the skein lasagna module for 4-manifolds
without 1- and 3-handles, and present some explicit calculations for disk
bundles over $S^2$.
