Yes, you can put UDF filesystems on various devices. Just use the udftools
package for this.
If you want specific block sizes or media-type strategies etc, you can specify these. I found I had to explicitly mount the floppy as UDF (the auto
mounting selected the wrong filesystem type).
mount -t udf /dev/fd0 /media/floppy
You've got me intrigued as to why you want to do this.