Tis' the season to be jolly as they say and just before the arrival of the first ever Christmas drop within The Sims Social, it seems the developers added a feature covered by many other online Facebook games with the introduction of Mystery Boxes.
When you buy a Mystery Box, you have a choice of how many to buy in multiples of x1, x5 or x10 with SimCash savings for each higher increment Mystery Boxes bought. Once bought, The Sims Social game will automatically select your Mystery Box prizes at random. So you cannot choose which items you get, it's just luck. Maybe you could get lucky on a one Box purchase and win a Super Rare Item. The only downside to the random pick is that you could be given two items of the same.
In total there are 12 Winter Garden Mystery Box Items to collect, ranging from six Common Items, Three Uncommon Items and Three Super Rare Items. Here is a list of all them along with House Value, description and recommended SimCash price:
Winter Garden Mystery Box COMMON Items:
Winter Garden Mystery Box UNCOMMON Items:
Winter Garden Mystery Box SUPER RARE Items: