I asked my friends if I may buy their girls (then aged 10 and 12) a Victorinox SAK.
Having known the girls all their lives and child minded them for two full (12 hour+) days a week, for two years (when they were two and four years old) I believed that I was a good judge of their character.
So did their parents, whom readily agreed........ I gave them both a Vic' SAK catalogue and let them decide. We then discussed their choice, and they reconsidered and both chose the Mini Champs.
Closely followed by two Leatherman Supertool sized multi-tools, not from the Vic' catalogue!
Their little brother (then aged five) also got the same type multi-tool.
The kids had been familiar with the SAK Swiss Champs and Leatherman Supertools which their father and I wore on a daily basis, and the small SAK which I'd given their mother, and had always treated them with respect when they asked to handle them (which was frequent!).
Having grown up seeing adults with personal knives, and being trusted to handle, examine and use them, the children have a responsible attitude to knife usage and care.
The youngest girl has my Gerber E-Z Out River Rescue knife on her PFD for Packrafting, and is also an enthusiastic whittler (with a knife bought for that purpose).
Perhaps ask your child which type of knife they may prefer and discuss the practical options, it worked very well for us.
That's good advice
We did have a talk about practicality as well as what aesthetic he wanted (hence the desision on Fixed with sheath, but having gotten an idea of what he likes, I wanted the final present to be a surprise... I think he'll be dead chuffed with this one