One 10/22 accessory I forgot to mention (it even would be useful for your bolt 22's) is a self reseting steel flipper target. I have the birchwood-casey one it has 4 lower targets and one above. when you shoot the lower ones once they are all up you shoot the upper target which releases the lower ones. It is a true hoot I have put thousands of rounds at mine.
here is one like it from cabelas
http://www.cabelas.com/cabelas/en/templates/pod/vertical-pod3.jsp?_DARGS=/cabelas/en/common/catalog/pod-link.jsp_A&_DAV=MainCatcat20712&rid=&indexId=cat601043&navAction=push&navCount=1&parentType=index&parentId=cat601043&id=0012734
here is one like it from cabelas
http://www.cabelas.com/cabelas/en/templates/pod/vertical-pod3.jsp?_DARGS=/cabelas/en/common/catalog/pod-link.jsp_A&_DAV=MainCatcat20712&rid=&indexId=cat601043&navAction=push&navCount=1&parentType=index&parentId=cat601043&id=0012734