We've always invested with bad times in mind (though it caught us off guard too a few years back! Came a few years earlier than was betting on).
Things we've done:
Invested in the cheaper end of the residential property market. When **it hits the fan, we figure people still need a place to live but will live in smaller/cheaper places.
Hold some gold. (One of the things that saved out backsides in the GFC cruncher)
Grow our own food (ok, this is more a hobby thing, but being able to feed yourself/barter in tough times is not a bad thing)
Things we are doing now in addition (because where a bit older and less adventurous):
Paid down debt (in offset)
Moved from general shares to CPT's with the thinking that industrials/financials tend to be hit immediately with bad news on the market, but CPT's with big business tenants and long leases will likely have a lagging effect - certainly from a yield perspective(commercial leases can't just be broken if the business is a going concern). By the same token, looking for CPT's with "recession resistant" tenants - i.e. avoiding manufacturing, looking for offices, large shopping centres with Woolies, Coles and Aldi as key tenants, and without heavy reliance on boutique stores.
The Y-man