Here is a concise summary of the provided text:
**Content Creator's Video Summary**
* The creator reacts to "bad trampoline fails" videos, a topic close to their heart since they've been into trampolines since childhood.
* They share their own trampoline fail experiences and show a few of their past accidents, including attempts at consecutive backflips and triple front/back flips that went wrong.
* **Side notes:**
+ Someone mysteriously left an iPhone 5 at their doorstep.
+ They're going to Puerto Rico with Magcon (Sept 9-12) and will document the experience.
+ They're promoting a limited-edition t-shirt design (available for one more day).
* The video ends with a teaser for a cliff jumping video (next day) and a reminder to order the shirt before the deadline.
Here are the key facts extracted from the text, keeping each fact as a short sentence and numbered for reference:
1. Someone left an unmarked, full package at the creator's doorstep.
2. The creator has been into trampolines since they were very young.
3. The creator has experienced their own share of trampoline fails in the past.
4. Limited-edition t-shirts (and hoodies, tank tops) were available for one more day when the video was recorded.
5. Youth sizes for the merchandise were made available after initial site problems.
6. The creator will be attending an event with Magcon in Puerto Rico from September 9th to 12th.
7. The creator knows Blake Gray, a participant in the Magcon event, from before either of them gained popularity.
8. The creator plans to film parts of the Magcon event for a future video.
9. The creator received an iPhone 5 from an anonymous sender without a return address.
10. The creator received a shirt from "Adrenaline Addiction" which they appreciated.
11. The creator will be cliff jumping the next day (after recording the video).
12. The video features the creator reacting to "Best Trampoline Fails of 2016" among other trampoline fail compilations.
13. The creator shares some of their own worst trampoline accidents towards the end of the video.
14. One of the creator's past trampoline accidents involved attempting consecutive backflips and getting too close to the springs.
15. Another accident shared was a failed attempt at a triple ball out, which caused significant pain and temporary loss of breath.
16. The creator also shared a failed triple front flip attempt, mentioning they would have succeeded if they had held on.
17. A year and a half before the video, the creator attempted a triple backflip, which failed, causing injury and temporary inability to breathe.
18. The creator successfully landed a triple backflip at a recent Midwest Meetup, overcoming a past failure.