Sounds like you had quite the adventure in Spain. Glad to hear that your recovering well and looking for more challenges.
Hope the below appeals and that you'll give it a go.
You should see if you can find a local sex shop interested in putting on a special event one weekend evening featuring a live sex doll. They should advertise the event to any and all of their customers and get you to stand outside the shop on the day to help them to promote it, wearing something like this
https://www.amazon.co.uk/LOVELYBOBO-...%2C163&sr=8-18 or a similarly risqué outfit with a slut collar and strappy heels making people aware that you will be the main attraction. You should ensure that your ass is plugged with a vibrator on low-medium, just to keep you horny in the meantime.
As the event time approaches you should move from the window and change into a full body fishnet and should be suitably restrained using something like this
https://www.amazon.com/Spreader-Rest.../dp/B0BMTG5RYJ to ensure that you can be readily used in everyway and moved about as necessary.
You should have a remote control vibrator inserted and anyone who wants to try their luck can pay to use this on you for 2 minutes at a time, with a small prize to be won eg lube, a dvd, a voucher if they make you cum. Your job is obviously not to cum whilst they are using the vibe.
Customers should otherwise be encouraged to purchase items from the shop to tease and torture you with and told to do what they will with you.
Each person you service should also be told to finish by cumming on you, rather than in you and should mark a tally on your lower back with permanent marker when they are done.
Once the event has finished, the shop owners should count the tally marks and write the number in permanent marker on your forehead. You should then dress back in your promo outfit and make your way home without cleaning yourself up first.