[craigster59]

We use something like this on furniture we will be moving around set to secure the shelving:

https://www.amazon.com/Stainless-Brackets-Internal-Fastener-Furniture/dp/B08915XXWZ/ref=sr_1_1?crid=1JCOZDAVVAKK0&keywords=30PCS+Stainless+Steel+Corner+Brace%2C+2.3 %E2%80%9Dx+1%E2%80%9D+Small+Corner+Brackets%2C+Hea vy+Duty+90+Degree+Internal+Angle+Brackets%2C+L+Sha pe+Brackets+Joint+Fastener+for+Wood+Furniture+Boar d+Window+Cabinet+Table&qid=1647645619&s=hi&sprefix=30pcs+stainless+steel+corner+brace%2C+2.3+ x+1+small+corner+brackets%2C+heavy+duty+90+degree+ internal+angle+brackets%2C+l+shape+brackets+joint+ fastener+for+wood+furniture+board+window+cabinet+t able%2Ctools%2C359&sr=1-1

Same idea as Shaun's.