I've been thinking about when players let their loomed weapon or else in the armory of a clan and someone rents it but does not use it for a long while as he's not playing or maybe left the mod. Even more when a player uses the item but don't do the completely disinterested effort of putting it back in the armory after playing (which is normal, we all have other important things to do).
Simple as that: You can rent whatever number of items you want if you have the money, but the Loomed Items will go back in the armory after 48 hours. You can keep them a little more than 24 and allow more players to use them rather than 72. So you'll pay for exactly 2 days and won't waste any money, don't need to make the effort of putting it back again, items owners won't need to retake their items and put them back to allow people to use them, and it could make the looms in armories count for more allowing more people to use them. This would be only for loomed items, normal items could stay in the inventory forever if the member doesn't return it and the owner does not take them back.