All Three

Unable to lead yourself to a suitable decision, you decide that the only fair way was to either wear them all or wear all three, and the latter option wasn't happening.

Giggling to yourself quietly, you first picked up the collar which weirdly had your name on it before shrugging and placing it around your neck anyway.

Then, you pick up the gag, placing the ball into your mouth before pulling it tight, making you wet already with the knowledge that you wouldn't be able to scream for help at all, not that it would help you anyway.

Finally, you pick up the cuffs, placing one around a wrist before moving them behind your back and into position and then cuffing your other wrist as well.

If you could speak right now, you would probably be saying goodbye to your freedom, but you're gagged so that isn't possible.