https://github.com/pcaversaccio/snekmate is a repository of state-of-the-art, highly opinionated, hyper-optimised, and secure Vyper smart contract building blocks[1]. It is inspired by or directly modified from many sources[1] and includes functions such as "Owner-Based Access Control Functions"[1], "2-Step Ownership Transfer Functions"[1], and "Multi-Role-Based Access Control Functions"[1]. It also includes a Hardhat plugin to deploy smart contracts across multiple EVM chains with the same deterministic address[3] and provides an issue tracker and discussion forum for users to ask questions and provide feedback[4][5].
