You could do human damsels like Marge Simpson tied up and gagged by her son Bart

Dude tied to chair.
Dude tied to a pipe in janitor closet.
Dude tied upside down and dangling from a rope tied to a tree branch.
Dude tied and trying his best to to open a locked door.
Dude tied up in a trunk.
Dude tied up.
Dude

Alright get over here so I can tie you up dude

In all of these ways? ok here I come

MolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMolloMollo

Mewtwo tied up?

experiment with more unusual bindings

magic gags like zippers, mouthless, bolted metal

well think it's good with you tie more boys and maybe anime girls too, but you just have to follow what you really like :3
so i cannot help you much with that but your mind for bondage situations surprise me all the times ^^