Sell that 5 dollar worth of bnb for btc. Sell that 13 dollar worth of btc for that same altcoin I have. Then withdraw that altcoin whole balance to my nano ledger
This seems to be the best option, what's the point of keeping $5 bnb and $5 btc! It won't do much to you financially even if btc where to be trading at 100k for instance, better to convert everything to that same alts and hold, the chances you will get good returns from the alts is way higher than hold the btc and bnb dust, the solution is already in front of you.