A Gold IRA would be a disciplined way to spend money on gold over the years

https://temperance.blob.core.windows.net/financialupdates/GoldIRA/uncategorized/self-directed-roth-ira-gold-a-practical-guide-for-investors.html

A Gold IRA shall be a disciplined means to put money into gold through the years, as a result of scheduled contributions or rollovers as component of long-term making plans.