No, I cannot.
In order to get stuff you want instead of “stuff you don’t need” register for items you want, whether they be for your home or for a hobby.
Since most couples will have acquired many home items before tying the knot it is perfectly acceptable to set up a registry at a wine store, sporting goods store or use Newlywish or Registry360 to create a unique registry of items from various retailers.
When you don’t set up a registry, that’s when you risk getting stuff you don’t need and may not be able to return or exchange.
You can always spread word through your parents and bridal party that you’re hoping to buy a home soon and that may encourage cash gifts, but under no circumstances is it appropriate to register for cash.