creating a freebsd boot floppy with kernel?

If I want to create a small bsd, rather a boot floppy with very limited
software as I won't be needing much...(one program and harddrive access) 
how should I go about it..  I tried compiling a custom kernel and the
smalest I seem to have been able to make is 2mb.  I want to try the
floppies but I could possibly move to cd's.