Do origami with them, starting with simple and working up to more complex projects.
Play board games. The best games are those with small pieces that require lots of movement and use of their pincer grip, like Scrabble, Jenga, Draughts, Connect 4, Downfall and Monopoly for example.
Use Lego, Nanobloks, Mechano, Knex and other building activities with small pieces and parts that require assembly.
Involve them in art projects or games that involve drawing, writing, or scribbling like colouring, creating fun signs, or playing Pictionary
Do art projects that involve cutting, like making paper snowflakes.
Play with remote control cars.
Have a finger painting party. Get a big piece of butcher paper and have a blast making your masterpiece.
Make homemade moulding clay together, choose a theme, and work as a group to create that theme: a village, a sports team, an animal farm, and other things that require using imagination and fine motor skills. Get the pupils on board by allowing them to choose the theme (something that relates to them), having them make the moulding clay, and allowing them to choose the colours.
Create a puzzle station. Have a table with a puzzle on it at all times. Put chairs around the table so class members can sit together or work individually on piecing together the puzzle.
Have outdoor winter fun by building and decorating a snowman or having a fun and friendly snowball fight. The process of gathering up the snow and decorating helps with their development.
Include in their chores assignments like picking up small pieces and parts from games or paper from art projects and separating it into bins or putting it in the recycling/bin.
Have lessons on a specific handmade craft: sewing, knitting, crocheting, jewellery making, scrapbooking, card making, etc.
Encourage pupils to write as much as possible by having him or her to give handwritten thank-you cards on a regular basis to others.
Cooking. Have them knead the bread, stir the cake batter, or spoon out the cookie dough onto the baking sheet.
Play speed games where each player competes against themselves/or others for the high score. Games could include typing tests at the computer keyboard, texting tests, how fast you can separate and place coloured chocolate sweets (like M&Ms) into different jars.
Play peg board games like Battleships or Time Shock .