A good travel insurance policy! Check out the end of season ski wear sales now or ask friends to clear out closets( I have kids ski wear that cost a lot, so donate to other kids, sometimes we get stuff too from the 'last season brigade' ) Good quality polarised goggles to avoid glare will make his holiday better. Sun cream, and sunblock for his nose. Proper thick ski socks ( or wooly - that's important wool ones - hiking socks, on offer soon.) Good skiing gloves make all the difference too, they have traction to avoid poles slipping, thin high quality insulation.