After reading the posts on this Forum you might want to do a Google search for `hollow wall anchors' where you might get more ideas.
I like the screw in anchors when the holding screw is inserted into the anchor after it is screwed into the wall. Use some candle wax on the screw (not the anchor) to make the screw go in easier and less likely to cause the anchor to spin.
Dick_B
2003 SunnyBrook 27FKS
2011 3/4 T Chevrolet Suburban
Equal-i-zer Hitch
One wife, two electric bikes (both Currie Tech Path+ models)