@Antonio324
That's a great start, well done. Don't feel stupid - you know you can't imagine how bad some people can act because you are not like that. So - get even instead.
Have you gotten in touch with Airbnb yet?
Very important to get in touch immediately. From what you have said - the mess in the room won't add up to much claim wise - but in my opinion (and sorry I am not a case manager - just another host trying to help out in the community forum) the pics of the before and after will help with the claim for the taxi, oyster card and macbook - IF you can pull together enough evidence to prove some things.
1. Did you have any communication with the guests via Airbnb texts (always try to do this - especially if you 'loan' or provide any extra services like Uber taxis etc)?
2. Have you written to the guests (politely) saying something like - Sorry you checked out early as I wanted to say goodbye, but I noticed you did not leave the payment for the Uber & Oystercard as we had previously agreed, and there was damage to the Macbook I had lent you..... I will be estimating the repair/replacement costs right away and will send you a payment request using the Airbnb resolution system, which Airbnb will take out of your security deposit (even though this isn't quite accurate - they don't need to know this - just get it all in writing if you haven't done so already).
3. You mentioned 'current' guests....... when did they check in and did you get in touch with Airbnb before they did?
Happy to help out Antonio - just let us/me know if you want more advice on tis one - or at least let us know what you ended up doing and any response from Airbnb - your unfortunate experience might just help another host prevent it happening to them.
Cheers!