Splinter removal from good hand post stroke

With the 50+ temps recently when I go for my walks in the woods I no longer wear a glove which can cause problems using my pruning shears to clear brambles.  I embedded a thorn in my right thumb. Tried and failed to remove it by wedging a pocket knife against a table. I no longer have a vise I could use to steady a sharp instrument. I suppose I could have waited until it festered and popped it out then but I had a friend pull it out with tweezers. This ADL was not covered in any of my OT sessions.  Bandaid application is similarly very hard to do on the good hand.