Homemade advent calendar

[thisgirlloveschristmas]

I bought some red house advent calendar boxes from ginger ray to make my own advent calendar for my Mum and Dad. I plan to buy everything from Hotel Chocolat for them to fill it. My only problem is they are slightly smaller than I thought.
I was hoping to fit a pack of selectors in a box but they don't fit so will need to split the pack and wrap them. Do you think it will be ok to wrap them in foil and some tissue paper?

I'm sure it'll be fine, your mum and dad won't mind, hopefully!! Sounds like a lovely idea too, was thinking about doing one for my own Dcs this year but wouldn't know where to start!!