Help!

I'm in uncharted territory here and I'm really flummoxed about how to solve this dilemma.
I bought a new hunting sporran to match the band I was in at the time and everything was great until I lost a small rivet off one of the flaps.

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I never thought I was very anal about something this small going missing, but the more I use it, the more I think about it and the more it bothers me. I've done a number of searches for this specific problem, but kept coming up empty handed. Does anyone have any suggestions? Know of a source of replacement pieces? Is it even repairable? I suppose I could create something that would work, but there's got to be something faster, less expensive and satisfactory. I'm sure I'm not the first one with this problem.

Thank you very much for the help!

Jon