Take an existing Padder Tennis Bat and trace its shape on some plywood or wide plank that it can fit on, and then cut it out with a Jigsaw, sand the edges, and if you want you can add curved wood to the handle that some Padder tennis Bats have, or round the handle off while sanding.
Its that easy and they last for years. an advantage to doing this is that you can make the bat smaller, or bigger according to your style, paint it your colours, and it becomes personalized just for you. Each one of your children can have a personalized bat as well, their own colours, stickers, and such.
All the best from
James M Sandbrook.
5th of may, 2021.