Thankyou very much for all the links!
Self-healing mat and metal straight edge I have. My only craft knife is a better quality version of the snap-off blades type, I've been meaning to invest in a Stanley knife for a while. The thing that's tweaking me about rivets and hole punches is that I have a superb high-quality eyelet press (a ClipsShop CSTEP-2), but it doesn't have dies for hole punching or setting rivets rather than eyelets. Seems a waste!
The belt project I have in mind would be stitched rather than riveted, it's replacing a belt made to go with a rather lovely handmade buckle, which was originally commissioned from a master saddler of whom I have fond childhood memories. Sadly I was optimistic about the size of my waist and the damn thing's never fitted me Speaking of dyes and finishes, is there anywhere I can get a good comparison look at different leather finishes, eg. the different colours of FIebings' stuff? I know which finish I want but I don't know what it's called!