Quirky Business Conference T-Shirt Design -- 2

I'm looking for a talented designer to create a unique t-shirt design for an upcoming business conference. The design should effectively market my business while maintaining a professional yet quirky style. It's important that the t-shirt stands out and leaves a memorable impression on attendees.

We are an Australian environment and sustainability consultancy - you can see information about is here https://pangolinassociates.com/about/our-approach/

We have a conference in Melbourne on the 23rd of July so we are looking for a quick turnaround. The deliverables will be 4 designs that work together to print on the front and back of women's white t-shirts. There will be 2 t-shirts so we need a total of 4 designs (front and back for 2 t-shirts) that work together to create a co-ordinated concept that gets the attendees at the conference interested in having a conversation with us about "circularity" "decarbonisation" and "life cycle assessment" and of course sustainability. I have included some mockups that we have done with some ideas to get the ball rolling.

We will pick 3 designers for the initial concept at around $50 each to see your 4 designs (although you could come up with more than 4). And then work with the best options if they need any additional changes.

Key Requirements:
- cleverly include our company logo (the swirl) in the design
- Include our business taglines and slogans
- Use abstract graphics to add a creative touch
- Maintain a balance between quirky and professional aesthetics

Ideal Skills and Experience:
- Strong graphic design skills with a focus on branding
- Experience in creating t-shirt designs for corporate events
- Ability to blend professionalism with creativity in design
- We like the idea of having say 4 t-shirts each with a slightly different design front and back to create a conversation piece at the conference

I'm excited to see your creative ideas that will help make our business stand out at the conference!