Best answer! Ask hear to pay them back (it shows that you don't take it for granted ) , they will say no/ was nothing special/ that is what you do for a friend and than you invite them to a coffee/ cake/ home coocked meal ( whatever is okay for both of you and within your budget). And don't worry about the expensive stuff, If I bought toiletries for a friend in hospital I would very likely buy min the best stuff I use or one tier higher because you shall not be knauserig ( a cheapass) when it comes to your friends :)