Interactions using checkboxes

Or even set a variable to 1/Yes/checked if checked, and 0/No/unchecked if unchecked?

Yes, absolutely! 

For interactions with checkboxes, conditions come in handy. 

You will have to set the following conditional interactions for hiding/showing an element with checkbox: 

1. Click (tap) -> If content of element - checkbox - is true -> Show an element 

2. Click (tap) -> If content of element - checkbox - is false -> Hide an element 

Here's an example: http://recordit.co/PkBQg53fNf

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For setting a variable, it'll be very useful if you want to trigger interaction when more checkboxes are (un)checked. 

After creating a variable set its default value to 0. Then each checkbox should have 2 conditional interactions (if/else).

1. Click (tap) -> Condition:  if content of element - checkbox is true (checked) -> Set variable as expression- $nameofvariable + 1 

2. Click (tap) -> Condition:  if content of element - checkbox is false (unchecked) -> Set variable as expression- $nameofvariable - 1

After interactions are set to duplicate this checkbox X times.

Then add interaction to canvas:

 1. Variable change -> Do Action -> if value of variable, eg. equals value 2

2.  Variable change -> Do Action - if value of variable, eg. equals value 4

Here's a video showing this example https://recordit.co/Vrx4ITaD4z