Self-Bondage Within a Tight Wardrobe Space

hi all, this is my debut here. I’ve just realized that my wardrobe works perfectly for some self-bondage practice, so I figured the more seasoned members might have some suggestions:) At 23 years old, I enjoy crossdressing and prefer situations with hard bondage, pain, and anal play. The closet has enough room for me to crouch inside comfortably. There’s a bar overhead where I can secure my wrists. My plan is to be bound within the space with a dildo (or similar toy:)) positioned underneath me without actually penetrating. By balancing on my toes, it will get tiring quickly until I have no choice but to drop down onto the toy. I’m also seeking methods to extend the duration of these sessions since they usually end too early because escaping is quite easy for me. Please share any thoughts you may have!:)