Couple of things. One pewter both come from a colonial site.

[Stef45]

Both of these were from a colonial site. Not sure what they are. Maybe one of y'all know. The square looking thing is pewter.

 

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[relic nut]

Last item looks like hinge from a scale/engineering ruler. Here is a similar one.

HH, Relic Nut

 

[Stef45]

Last item looks like hinge from a scale/engineering ruler. Here is a similar one.View attachment 1303464

HH, Relic Nut

Now there is an idea. Even if its not off of one of those. it does look like it could be a hinge of something similar. Thanks!