Re: Non - traditional Aikido techniques:
Some fun stuff.
In terms of being non-traditional, well, some of the standing crossed arms chokes were back in Budo Renshu. There are a few movements that look like Daito Ryu, and one or two that bear resemblance to Tomiki Aikido. I did have one teacher who showed many similar ideas in his seminars.
OTOH, so much is maybe not clearly part of the basic syllabus now that in looking at older (often defined as traditional) forms, they might now look untraditional.