Searching for Invisible Holmes, dog body swap Watson

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I would love some help finding two fics I remember reading some time ago.

1. Holmes accidentally makes himself invisible. I don't remember much else, other than it was a medium length story, and funny but also a bit poignant. It is either 09 film or book canon, but I am sorry I don't remember which.

2. A body swap occurs in which Holmes, Watson and Gladstone switch places.

Thanks very much for any help.