Magnets and reed switch activation

[paul.deitch]

I have 50 tiny 2mm dia and 2mm thickness magnets.

One is not powerful enough to close the reed switch.
If I use two or more what is the best way to orient the magnets for max magnetic field for the reed switch?
Do I set them side by side as opposing and glue them together? Or side by side attracting and glue them together?
I probably have enough space for a second magnet behind the first for both one and two rows which I guess might improve the field strength.

Have I missed any tricks? What are my best options? Thanks

[Mr Pointy]

I'm pretty sure if you stack them then the two fields will add.