As a former manufacturer who did a lot of work in the instagram space, here is my opinion.

You aren't quite there yet.

1500 followers in a month is awesome. Your next 1500 are likely going to be much easier, and the 1500 after that.

What you have right now is attention and there are two ways to monetize that:

1. Advertising on behalf of others
For lifestyle brands I have seen promotions for single posts go for around $100 per 100,000 followers. It could be a while before you get there and I don't think the juice is really worth the squeeze.

2. Creating your own product
You're on the right side of developing an audience before investing in a product. Way too many people sit on inventory and sunk cost doing that the other way around.

One of the problems with instagram is that it's difficult to promote offers outside of it. You have to post a link in the comments typically so it's not exactly the best landing page.

Also (this a property of monetizing any list) you don't necessarily know what your list is going to respond to and how.

Maybe you could sell a ferrari rental to 1/5000 people.
Maybe you could sell a travel package to 1/25000 people.
Maybe you could sell a premium wallet to 1/1500

If you tried to sell a travel package right now though, you could get a negative response and give up on a potentially lucrative income stream.

I would prioritize growing the instagram channel and finding inexpensive ways to test each of these markets. Let me know if you need any help on strategy for this.