For those in Europe with limited firearm access a swiss halbard is good to have
https://youtu.be/zxWnnE3PzrE
A couple recurve bows with arrows and broadheads could be a great thing to have for a group defense paired with swiss halbard.
Im from TX and used to buy ak and ar variants over the counter. in contrast, Folks here in Europe are patheticly unarmed.
Also for processing firewood a silky katanaboy is great for hand sawing logs. Worth the price!
An air rifle and pellets paired with a trapline of connibear 110 steel traps will provide meat efficiently.
Gold or silver coins could get you accross checkpoints or tickets aboard a vessel and out of the shit. I think silver a great investment at todays prices. taking into acccount the ridiculous low ratios of above ground silver to gold. Silver is a no brainer.
Crypto currency could be a store of value, this has not been proven but is worth considering. Security coins are my favorite niche. Monero is an example.
Putting beans and rice into mylar bags inside food buckets is a cheap way to have calories stored. Store beans, rice, salt in seperate buckets with labels. It will last 10 years.
I train Jiu Jitsu and Krav Maga. Its just fun and great excercice. Jiu Jitsu is a secret weapon. Functional strength based training and weight lifting like swimming, running and calisthenics is good.
Theres a guy that was in Bosnia when the war effected civilians that writes online or used to, he said he would have stashed a few hundred bic lighters for easy portable barter currency.
Electric bicycles will be great to have. Electric hub motors and batterries. Also HAM radio equipment and knowledge is good.