Hey all,
Before I begin, I should note that I am of Scottish ancestry!
The title says it all. I was cleaning out my parents basement and found these things. When I asked my mother about it, she told me that they belonged to my grandfather's (born 1915) grandfather (maybe born 1870sh? this is me guesstimating).
She thinks that it may have something to do with bagpipes, but is not entirely sure. From the brief search that I did, I've gathered that the crest 'Per Mare Per Terras' belongs to that of Clan Donald, but no idea what the other stuff is.
Is there anyone out there that could possibly help me identify what these are?
Crest/Badge/Hat: https://imgur.com/ZzJvwPR
Not sure what these are? https://imgur.com/a/uOZDG
Another picture of the hat and something else... https://imgur.com/a/9B16M
No idea... https://imgur.com/a/DXfak
Some sort of a... horn...? https://imgur.com/a/BDuy2
The small knife is for placing in the hose (the top of the sock), and it is called a sgian dubh or black knife. The larger blade is a dirk and is worn on the right side of the belt. It includes implements for eating meals. The "something else" is a practice chanter for learning to play the pipes. It is also used by experienced pipers to practice and to learn new tunes. The Glengarry - the hat - and the crest badge is as you indicate part of clan affiliation. The round jeweled object is a broach for securing a plaid, the garment worn over the left shoulder (from which through a misunderstanding, comes the vernacular work for tartan).
I have no authoritative comment on the horn. It appears to be purely decorative and in imitation of a powder horn, but it is elaborate.
There are some nice pieces there; enjoy the legacy.
To understand some of this material in a historical context, there is an excellent article on the invention of Highland traditions in The Invention of Tradition.
https://www.reddit.com/r/whatisthisthing/ might be able to assist with this.