UKC

Anyone got any votes for the YY Triangle or a similar tool for training when you're travelling or just don't have access to anything better?

Looks good, I have the YY Duo - mono and two finger pockets. It's well made and I don't seem to have any single finger, or pair of fingers, strong enough to break it

For four fingers I have the Metolius Wood Rock Rings, simply because they're what my local shop happened to be selling. They work fine too, probably going on appearance a bit bulkier & heavier than the YY Triangle which might be a consideration for travel.

I have the YY Triangle. Amazing bit of kit. The slots are well crafted and never broken the rope that comes with it

I have the Tension Block and really love it.  I also have the small Ash Climbing one too.  I prefer the former but the latter is more portable, if space and weight are an issue.