Some good things toy and entertainment wise to take on holiday would include things such as dolls, Board Games, and things of that nature which don't take much electricity.
they could but they would need some exercise. Leaving them in the camper cage would not be the best for them.
One can buy camper shells from eBay, Leer, Amazon, Craigslist, and more. Some good advice is to not leave anything of value in the camper shells, because the valuable may get stolen.
Some good holiday foods would be cakes, hotdogs, popcorn, pizza, ice cream, jelly, trifle, chicken drumsticks, sausage rolls, scotch eggs, pickles and cheese and pineapple on sticks.
There are several places online where you can purchase holiday travel insurance. Some websites that I would recommend are: www.travelprotecta.com and www.priceline.com
Unfortunately, you did not mention where you live so it is extremely difficult for me to provide you with a place locally for you to purchase a camper van. Your best bet would be to check your classified listings in your local paper or perhaps ask some of your friends.
Some good holiday messages are: 'Best wishes this holiday', 'Happy Holidays', 'Wishing you gifts of Joy Love and Peace this holiday', 'Merry Christmas and a happy new year', 'Celebrate the spirit of the season'.
Fruit salad.
I would have it covered just in case. If there isn't much value then some will decide not to.
An adventure holiday is a holiday with an activity or activities included that you would not usually do. These activities are probably not in a city but in some out-of-the-way place.
mad river is mad
Good ideas for holiday gifts are anything that you can make. If you can make like a nice candle holder and then you put a great smelling candle in it are some of the best gifts.
Some very good camper van accessories one can get are: Awings and sun canopies, fridges, cookers , furniture, bike racks, thermo mats, elevating roofs, to name a few.