Add the following to “Machines”, under the new subheading “Widgets”

Any Worker may Attach a new Widget to one of the Machines they have by paying its Cost and listing it in brackets next to the Machine’s name, i.e. “Clink [Cooling Widget]”. A Machine can only have one Widget Attached to it at any point in time. If a Worker would Attach a Widget to one of the Machines they have that already has a Widget Attached to it, that Worker first removes the already existing Widget from that Machine, then adds the new Widget in the previous Widget’s place.

A Widget has an Effect. A Widget’s Effect is listed underneath a Widget’s cost. Whenever the criteria listed in the Widget’s Effect are met, the Worker that has that Widget can and must execute that Widget’s Effect.

Cooling Widget
Cost: 10 Cogs
Effect: Whenever the Machine this Widget is Attached to is Activated when it is Cold and would be made Hot, it is made Warm instead.

Boxing Widget
Cost: 5 Cogs
Effect: Whenever you would gain a box containing a number as a result of you Activating the Machine this Widget is Attached to, you gain a box of that number plus one instead.

In the rule “Machines”, change the first and second paragraph to read as follows:

Each Worker may have up to six Machines in their Line; this is tracked as an ordered list that defaults to one Clink machine. A Worker may add a new, Cold instance of a Machine to any position in their Line by paying that Machine’s Cost. A Worker may Activate a Cold or Warm Machine they have by paying its costs, setting its heat to Hot, and executing its effects. A Worker may Demolish a Cold Machine they have by removing it from their Line.

A Machine has a Heat status that can be Hot, Warm, or Cold (and is Cold by default); this status is tracked by placing a apostrophe (‘) mark next to the name of each Warm Machine in each Worker’s list of Machines and an asterisk (*) next to the name of each Hot Machine in each Worker’s list of Machines.