Here is a diagram that shows you how to draw your own block, it's quite easy if you note the numbers. You can cut out some of the sections as templates, but don't forget to add 1/4" all around for seam allowances. This will make the centre block cut at 8 1/2'', so if your lighthouse blocks are only 8" you may need to add 1/2" to two sides, or downsize all pieces.
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Actually, if your blocks are only 8", you may not need to add the 1/4" to any pieces.