MagicFractal
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That last point is important, the usefulness of magnets on almost ANY topological surface shapes.
It's good to have the finest tools, but you can do a lot with less. A couple of bandaids can hold magnets to your fingertips, if control gloves aren't affordable. Suites of graphic programs costing thousands can make some miraculous images, but the free program Gimp, and old versions of Paint Shop give you enough ability to preview ideas. Oftentimes a pencil and paper (and a draftsman's eraser) are enough, plus you can work out the arithmetic to make everything fit before you get ahead of yourself with tools and materials. Careful planning is real engineering.
An expensive tool that I love and know no substitute for is a "graphic tablet". Mine is an ancient Wacom.
For this example virtual puppet the whites around Felix's eyes are thin plastic. It can be flat, though curved would be better. The pupils of the eyes are buttons with magnets embedded. The same buttons can be used on the unseen opposite side, inside the head, but the magnet polarity must be flipped. Putting two of the same together, you'll find, will PUSH and not pull to hold the eye in place. With no magnetic glove or fingertip magnets, the buttons inside can be slid around, causing the eyes outside to move wonderfully. It would help if the inside buttons had rings or indentations for easier movement by single fingers. Thumb and pinky can be used to control eyes that move far apart.
Animating puppet eyes with fingertips is a fun and flexible method, more entertaining than most other eye actuation anywhere near the cost.