This is what I made as my monthly gifts for my mom's Red Hatters group - Golden Girls of Texas. These are 3x3 Needle Cases to store sewing needles easily. Last time I made felt coozies, thus I needed a way to utilize some of the left over felt scraps.
I used rubber bands on the outside for closure due to the fact that these are for older women which have issues with little buttons and clasps. I made the inside felt "pages" large enough for my largest sewing needle which is a 2" hand embroidery needle. I also sandwiched a thin piece of cardboard (from a cereal box) between the outer two pieces of felt to give the case some structure. The cardboard was cut slightly smaller than the overall size to leave room to sew a border without having the cardboard going through the needle.
These could also be used as travel sewing kits... shown here with safety pins, needle thread, etc... You could also customize the design and colors to be appropriate for men that travel or wear suits and/or dress shirts with a couple clear buttons included inside.