The Koogel journal
Long guides to studying with index cards, wrapping with tissue paper and choosing a paper weight, with the numbers worked out.

How to Study With Index Cards: Writing, Spacing and the Leitner Box
Write each card as one question, quiz yourself instead of rereading, and let a three-box Leitner system decide which cards come back tomorrow and which can wait a week.
8 minutes to read

How to Use Tissue Paper for Gift Bags, Flowers and Fragile Gifts
A gift bag with two limp sheets looks empty, and one stuffed with ten hides the gift it was meant to show off. Count the sheets by the bag's opening, fan them in a minute, and know which tissue can go in the paper bin afterward.
10 minutes to read

Cardstock Weight Guide: GSM, Pounds and the Right Paper for Each Craft
One pack says 180gsm, another says 65lb, and a third says 65 lb text, which is a much lighter sheet. Read both numbers with confidence and match the weight to cards, tags, boxes, folds and scrapbook pages.
10 minutes to read