Please help! Need advice for future soldier. 🙏🫡

This is a sorta wild story but I’ll try my best to make it short, since the reason I’m here is for advice, the story is just for context. I live on the gulf coast of Florida and bout a year ago I was on my kayak fishing and a storm blew it out of no where on a beautiful day (no float cuz I’m experienced and there was literally no bad weather on any of the 3 sites I use to check before I go out but yes I’m still an idiot) Kayak went down, I went in, treaded water, and was close to gassed out. 3’ waves will really wear a normal guy down. Then, an absolute hero showed up, he saw me through the dense black sky, and pulled me onto his boat. Anyway, that guy told me he’s becoming a soldier, at the time I believe it was coast guard. He was calm as fuck, very pumped to have saved someone before he even made it to boot camp. (I have zero doubt what so ever I would’ve died if it weren’t for him) So now, I occasionally check in, he’s switched to Army where he will be an 11x Airborne Ranger. He leaves for boot camp in like 3 weeks. I don’t actually know anything bout him other than he’s 18/19, loves boats and fishing, and he’s half Asian half Irish. I wanna get the bro something memorable from the first absolute moron he was able to rescue. I ain’t a rich man, so we gotta keep it realistic, but he’s a good kid and I gotta do something. Would love to hear any ideas yall got. I also have his mothers number (I had to thank her as well) so if it’s something that can’t be done in 3 weeks I’d imagine I could get it sent to him through her. Thank you all for your help, and your service 🫡