Age ranges shown include early-childhood and adult tiers — examples listed are 0–3 years, 8–12 years, 17 years and up, and 22 years and up.

They appear as hardcover and paperback books and as packaged party-game sets — the game sets are sold as full games that include cards.

Page counts range from about 32 to 112 pages, and some activity books advertise more than 100 prompts.

Prompts vary widely: many are short illustrated fill-in-the-blank sentences; party-game versions use question-and-answer cards; activity books include prompts to write, draw, and color, often organized by mood or color sections.

Some books are customizable: examples include printing a child's name on every page, a dedicated inscription or dedication page, and friendship-style fill-in prompts that create a personalized keepsake once completed.

Many are promoted as customizable or collectible keepsakes — common features include personalized messages, dedicated pages, and finished books that become personalized gifts to cherish.