If you are sure that you would not be trading your assets (BTC or even stable coins) you can keep them on Nexo. It's secure and provides 1 free withdrawal per month. It has good interests upto 12% (APY) which compounds daily!
If you want you can use my referral to gain extra profit, upto you. But keeping your assets idle is really a crime.

https://nexo.io/ref/0t091yb3il?src=web-link