The first accessory for the RF mount when coming from EF mount is the Meike RF Ring Mount. This will make moving from DSLR EF to Mirrorless RF seamless. You can buy this for the low price of $89 with the Affiliate link below.

Meike EF to RF Ring Adapter - https://amzn.to/3H6J5bf

My Speedbooster for the R7 - https://amzn.to/3uEfazX

Canon R6 Mark II https://amzn.to/3ixYBmo

Canon R6 https://amzn.to/3VMqYve

Canon R7 https://amzn.to/3H0SWiV

Canon 15-35 RF 2.8 https://amzn.to/3H4Ztcj

Canon 24-70 RF 2.8 https://amzn.to/3XNwAau

Canon 70-200 RF 2.8 https://amzn.to/3iyhB4d

DJI Wireless MIC https://amzn.to/3upatJP