Maybe someone created a 3d print model that you can use to print one. There's probably a maker space with a 3d printer you can ask to print it

John Heisz showed a little while back how he made his own feather board for table saw use. You can buy one of course or you can make your own, as mechanically they're fairly simple. I've seen more than a few examples that use either a mag switch to connect to the cast iron top of a saw or some that use an expandable bar to fit into a miter/T track.

John's video: https://www.youtube.com/watch?v=FpGrj2DGtoo

Wood magazine's page on making one from scratch: https://www.woodmagazine.com/workshop/jigs/how-to-make-your-own-feather-boards

If money is no object there's this dandy contraption.

https://www.woodcraft.com/products/jessem-clear-cut-precision-stock-guides-for-table-saws?variant=43403559731338&gad_source=1&gbraid=0AAAAADi4UvqryTdfFSKIiUN0NJvwjiKB6

You can make your own feather boards, if that's what you're asking.

Maybe you could glue a bit of wood the size of your rabbit and glue it to the saw either side of the blade?

You can make your featherboards any shape and stiffness you want. A wide short one for the fence, pretty stiff and barely pushing on the material from above (just enough to keep it from rising up, really) along with a dado depth support directly behind the stack sounds like it'd do it.

@brownmustardminion I got this featherboard off Amazon and really like it. You can use the two fratherbosrds separately, or stack them on top of each other for ripping tall pieces.

https://www.amazon.com/gp/aw/d/B000WUB2JQ?psc=1&ref=ppx_pop_mob_b_asin_title

Yes you can use a featherboard above the dado, but not right on top. Set it back an inch or two before the dado so it has less chance of binding up the work piece. More wouldn't be a great idea, but make sure you have a good out feed setup to help with keeping the piece level as it passes off the saw.