Sorry for a bit of a cross-post from the libp2p discussion board as well. I wrote this medium piece on how we are using IPFS/IPLD/libp2p in Tupelo and I thought it might be interesting for this audience: https://medium.com/@tobowers/under-the-hood-tupelo-uses-ipld-libp2p-and-it-also-makes-use-of-bitswap-2d8007ba664c
If you are reading this before 31 August 2019, Tupelo is running a contest where you can win cash for building apps. It is a fun way to explore more of the Tupelo platform. Read more about it here: https://www.quorumcontrol.com/blog/buildthefuture