Laptop trackpads are fine until they are not. The Logitech Mobi Fold is the Arc-mouse spiritual successor that folds into a ~2.2 x 2.5 inch pocket rectangle, weighs about 2 oz, and costs $79.99. Unfold to power on; fold to power off. Theater kids for cursors, rejoice.
Specs that matter on a cafe table: Adaptive Touch Scroll (line-by-line or hyperfast), quiet clicks, up to 4000 DPI, Easy-Switch across three Bluetooth devices, and claimed ~30 days of battery with a one-minute USB-C top-up that Logitech says can add hours of runtime. Cable and brick are not in the box.
It is ambidextrous and travel-first, not a day-long ergo throne. A Logi Bolt USB receiver is mostly a business-SKU thing. If your bag already flirts with origami peripherals, pair this thought with the OrigamiSwift foldable mouse.
CTA: Grab the Logitech Mobi Fold (~$79.99) when the trackpad starts losing arguments.
Sources: Logitech Mobi Fold product page, Engadget review.