Hi Lisa,
At this time, we don't have much in the way of reports for the accessions module, and accessions are not linked to the Clipboard.
One community resource comes to mind - a blog post written by Jenny Mitcham when she was still at the Borthwick Institute at the University of York, entitled "Creating an annual accessions report using AtoM." See:
I have not tested this query, nor am I certain that it works in more recent versions of AtoM, but it's a good starting place at the very least.
AtoM 2.6 does have a physical storage report that will include Accession records (and/or can be configured to report only on accessions), if you are linking your accessions to physical storage locations in AtoM:
Hopefully other users can share what solutions and workarounds they have used!