Hah! I suggested that to my parents, we already have 7 at the moment, but only 3 can be ridden at the moment because 2 are yearlings, one's a broodmare and has never been broken in and the other is a miniature, and the only piece of tack I have for him is a bridle, haha.
I just usually lend my tack to friends, as long as I trust them and get it all back, I used to write a list and put their names by it and get them to sign, haha.
My friend had to sell her horses because her ex husband was trying to sell them, but they were in my friends name and she bought them, so...
She just gave me a box full of grooming supplies, a ton of books (Which were in my room and burnt) boots, 2 bridles and even a brand new hunter bridle <3 load's of bits, boots, girths and some rugs and headcollars. She even gave me the stuff I bought her over the years as presents, she said since she doesn't have a horse now, I should have them back because I bought them, but she said she's keeping her browband with her horses name on because that meant so much to her.
We used to keep some tack out in the garage but that got really damp and mouldy, so yeah, I find it best keeping it in the house, haha.
The stable I stayed in for 6 months is all plasterboarded, so I'm turning that into a permanant tack room, just gotta put a little fridge in there and a kettle and microwave, haha.
I will be doing that when all the workers come back to work, hehe.
I don't want to be in their way, hehe.