I don't know if I'm the only one who has searched for several years without being able to locate the little metal trim retainers that help hold the trim and dash bits in place but I've finally found some!
http://www.ebay.co.uk/itm/231978630750
They took 2 months to arrive on a slow boat from China but they were the ones I'd been looking for when they did finally show up.
I'd previously called several dealers, Jeep UK and Lord knows who else to try to get some spares after a few of mine went on a permanent vacation but without success. Bought two packs from the eBay link above for under 2 USDs shipped.
Hallelujah, I say hallelujah!!