First. All the tat is, is a description. You could just compile all the descriptions into an e-note, and RP it like they were pictures. People could look through the e-note.
Second. You could actually get a fun cam and take pics of all the tats you've done. Just shoot <person> with <camera> ( I think that's the verb anyway).
Then, after you've got the picture, print it out. If you have a tattoo parlour, as some people do.. let an admin know. We can ICly take the photo, make it immobile, integrate it with the room, and make it like it's hanging on the wall. So you walk in and see:
The tattoo parlour is lit from above. More desctiption more description. La la la. It smells like candles. Pinned to the wall is a photograph of Snake. Pinned to the wall is a photograph of Plissken. Pinned to the wall is a photograph of Bob. Pinned to the wall is a photograph of Goku. Pinned to the wall is a photograph of Opal.
etc. etc.
Or just keep the photos in a briefcase or wallet and show them off where needed.
Perhaps though, a scrapbook object would be interesting. It would be a book you just put photos into and you can turn pages and see the different photos. I could get behidn something like that as well.
~S