diff --git a/Future-Modules.md b/Future-Modules.md
index 05f137f..dfdf638 100644
--- a/Future-Modules.md
+++ b/Future-Modules.md
@@ -132,6 +132,17 @@ Everybody needs several VCFs with different behaviors.
 #### Synthcussion?
 #### Midi?  Or analog gate signals directly?
 
+## Envelope Follower
+Generate an envelope from an audio source instead of the reverse.
+
+## Envelope Overkill
+See Make Noise's Maths, Ken Stone's predecessor, etc.  "Lightning bolt generator".
+
+## Physical Reverb
+See LMNC's dabbling in physical reverb using springs and motors; anybody turn that into something more finish, preferably without needing a separate dangling reverb tank?
+
+Incredibly tiny plate reverb with some kind of pitch correction on the wet signal?
+
 # Digital modules galore
 Once this door is opened and we commit to a quantity order of arduino nanos or whatever, tons of options become available.