This little sweet from Kichi Zoh・吉蔵 is in the style of a Shigoto Musubi Omamori・仕事結びお守り which is shaped like a spool of thread. Omamori, or amulets can be bought at almost any shrine. Here are some examples of amulets you can buy in Dazaifu, where I often go hiking.
The Shigoto Musubi Omamori is a little spool of thread and the color of the thread and the manner that its knotted has different meanings. Overall, they help you through your work, daily tasks and livelihood. I have only seen them in Fukuoka, and I think they are quite popular from Kamado shrine in Dazaifu but I could be mistaken.
Either way is was a lovely little sweet! It definitely helped with my work tasks today.