Company builds an internal LLM lab using Streamlit to build personal LLM use cases. They were able to create two useful tools in just a few hours and could easily port the tooling to query embedding. They also experimented with creating a spreadsheet interface for LLM using st.data_editor and st.file_uploader, and were pleasantly surprised with the results. They suggest that self-hosted LLM tooling could be an interesting startup idea.