Chilli heads.

Use a soft paint/makeup brush to make your own hybrids by cross pollinating. I’ve never done it with chillis before but did it a few times back in the day when I was into indoor farming.
-Cover a handful of flowers with a small ziplock bag as soon as they start to form but haven’t opened yet.
-Cross pollinate once they’ve opened and re-cover to prevent further contamination.

Once the fruit has started forming you can remove the bag but worth tagging the branch somehow so you know which fruits contain the intentionally crossed seeds.
It’s a bit of a slow process but worth the effort. Obvs the fruits that form will be the result of the original genetics, only the seeds within will be the hybrid strain :)