A die cutter or templates are great if you plan to use pre-cuts or are relying on a scrap bag, but if you are using fat quarters or yardage, you'll be most efficient and have the least waste if you cut strips the width of fabric, height of desired tumbler. You can cut your tumbler pieces out using a regular ruler and marking the desired angle on the ruler either with tape or a marker -- no waste at all except for a small piece at the beginning of your strip.

QuiltersCache has a template for a 3" tumbler. A note at the bottom indicates that 272 tumblers of this size made a quilt sized 38" X 49" if that helps.

http://www.quilterscache.com/T/TumblersBlock.html

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*** I did mine with a 3" on top by 5" on the bottom - made template myself.
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*** Then sewed together in a rows.
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*** Easy to make
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With 5 inches across the top what did you decrease the bottom to form the shape. The 10 inch perhaps an inch on each side. Maybe I'll check photoshop and see if they has a tumble shape for the proportions I was thinking about 3/4 of an inch on each side. My DH makes most of my templates out of plexiglass for me. He has always been a encourager for my sewing and quilting.

Nancy's Notions has templates for many sizes of tumbler pieces. You might try her catalog;.

I use the large Creative Grids Tumbler ruler. Tumbler blocks chain piece quickly. I would use Best Press too. Cut layers of fabric and no waste! Easy and quick!

Sandy

That quilt is darling but there looks like a lot of waste in the white fabric.
Sandy

Marti Michell"s Tumbler template is amazing. It is easy and idiot-proof. (trust me). It has notched points so the blocks line up clearly and easily. The seam intersections are perfect. It is marked so your finished blocks can be from 2 inches to 5 1/2 inches. The template costs about $14.

I have made 5 tumbler quilts now. They are fun, quick and easy. Missouri Star has a tutorial and one of the magazines does also. Enjoy. Nancy

The 5" one also in fall 2013 issue cuz I have that one.