Present for my 2 nieces as going away gift?

so they both got into the same nursing courses that very few get accepted into. they are both early 20's and both have worked very hard on their schooling to get to this point. I want to give them something very special that they'll have all their lives and will remember me by once im no longer around. which hopefully will be a long time yet but I can't think of anything that could come from an uncle that isn't weird or creepy and would be something they cherish for many years. im willing to spend a decent amount of money on these two gifts. maybe like 1500.00 for both presents would be about my max.. can you recommend a great gift for these two young ladies who will be moving away from home for the first time, they will be going into the nursing field.. need suggestions because I can't think of anything really. thanks for the help

Present for my 2 nieces as going away gift?
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