I could feel the “Haman” part when I made it >_<
Template was made from 4 even sided (more or less) triangles, and "flaps were added to the outer sides. Then I cut out triangular "windows", taped some cellophane to the inside, and outlined a hamantaschen shape on the outside.
All lines to be folded were scored on the inside, with the duller side of the scissors' tip.
One side (2 flaps) was taped with a permanent double-sided tape.
As for the closing of the box, it can be taped (after filling, of course), or the box can be tied with the flaps on the inside or outside. A ribbon can be added to the rectangle at the top, or the sides of the box, to carry it.
The outside was later painted with scented paint- drink powder with a bit of water.
1) It’s not so simple to find a stencil or draw an even-sided triangle.
2) Cellophane won’t stick to the shiny side of a poster board with school glue.
3) A permanent marker, double-sided tape, and an x-acto knife are very useful inventions.