Homemade glass and window cleaners stack up very well against the commercial brands provided you make them correctly.
The dates a motor home made the trip in and out stack up perfectly.
The inability of the planar molecules to stack up would prevent polymerization from taking place.
Consider these comparisons to see how the Kindle and Nook stack up to each other.
When not in use, you can stack up the table and chairs and make a beautiful work of art.