Welcome to the forum, PootisCake. I edited your post to remove the large sized print as we prefer that all posts use the same standard sized font, except in stories where larger fonts are allowed.
Other than storing things in the Family Inventory, the only other way I can think of to get rid of things without being paid for them would be to give them away to other Sims as gifts. But perhaps other people will have more ideas.
Enjoy the forum!
Edit: Another way to do it would be to sell the items, then use the family funds cheat to remove the money. Depending on how many items you have, this might be faster than the gifting strategy.