I have a half-finished project that scans barcodes with the webcam, looks up the information in openlibrary, speaks the tile out-loud and records the output to a file that tellico can import.

Some people might note that tellico can take a list of ISBNs on input, so the extra step of OL lookup seems redundant. A lot of bookstores put their own barcodes (sometimes over the ISBN) and there can be namespace collisions between those barcodes and the ISBN. Looking it up on OL and reading the name out loud lets you catch these issues when scanning. There's nothing worse than scanning hundreds of books and then having to go back through to find the dozen of them that scanned wrong; by reading out-loud the OL information, you can just set them aside immediately and enter the information manually later.