The sandKit is a collection of abstractions for Vanilla Pure Data designed to cut down on redundancy when doing audio work. It consists of several convenient objects like simple counters and band-limited wavetable generators. The sandKit is especially useful for audio designers that want some of the more convenient objects available in PD-Extended but are developing for a platform that is unfriendly to the GPL.
The sandKit was originally created to speed up the audio development for the Sand Noise Device, but I find myself using its objects in almost all the PD projects I work on nowadays.
The sandKit is available on GitHub.